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pinkmommy Group Title

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  • 2 years ago
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  1. avery23 Group Title
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    All you need to do is solve for x in the second equation, and you will get one of the answers.

    • 2 years ago
  2. avery23 Group Title
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    You should get x=8-y. First add y to the other side, and then divide through by -1.

    • 2 years ago
  3. Rosh007 Group Title
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    you need to substitute tha value of x into first equation....from second equation.. can you tell me what is your second euation?

    • 2 years ago
  4. avery23 Group Title
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    You are just trying to find what equation you would substitute in.

    • 2 years ago
  5. Rosh007 Group Title
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    ok.. here your question says what expression would you substitute into the first equation? that means you just need to find the value to substitue so that you can solve later on BUt you have solved it by following the example in your note

    • 2 years ago
  6. avery23 Group Title
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    You did that right, but its just wanting you to isolate the second equation for x,i.e. solve for x and that is what your answer should be. The question is not wanting you to work it out. Just find what you are sustituting in.

    • 2 years ago
  7. avery23 Group Title
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    Yes.

    • 2 years ago
  8. Rosh007 Group Title
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    so let us go back to the first step... can you just tell me which is first uqtion and second equation.. (it is obivious fromthe options... but I want you to know what you are doing)

    • 2 years ago
  9. pinkmommy Group Title
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    i didnt know 8-y was the answer it was a guess first 2x + y = 9 second -x - y = -8

    • 2 years ago
  10. Rosh007 Group Title
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    yes... now your question says "what expression would you substitute into the first equation? ".... can you tllme what that means?

    • 2 years ago
  11. Rosh007 Group Title
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    *tell me

    • 2 years ago
  12. pinkmommy Group Title
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    -x - y = -8?

    • 2 years ago
  13. Rosh007 Group Title
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    yes.. ok.. let me help you it means.. you need to find a value to substitute in first equation.. and only we have second equation is left... you are correct

    • 2 years ago
  14. Rosh007 Group Title
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    now look at the options... which variable is there in options

    • 2 years ago
  15. pinkmommy Group Title
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    y

    • 2 years ago
  16. Rosh007 Group Title
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    yup... so... you have to substitue a value which contain... y.... and also from second equation... so which variable has to be replaced?

    • 2 years ago
  17. pinkmommy Group Title
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    x?

    • 2 years ago
  18. Rosh007 Group Title
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    Yes... and reason?

    • 2 years ago
  19. pinkmommy Group Title
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    eliminate to find y? idk

    • 2 years ago
  20. Rosh007 Group Title
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    yes... exactly right?.... so how you can find that value of x from second equation

    • 2 years ago
  21. Rosh007 Group Title
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    **Exactly right

    • 2 years ago
  22. pinkmommy Group Title
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    so how do i start doing it?

    • 2 years ago
  23. Rosh007 Group Title
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    ok..so we have second equation.. and ar you convinced that w have to eliminate x and we can do that from second equation?

    • 2 years ago
  24. pinkmommy Group Title
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    huh?

    • 2 years ago
  25. Rosh007 Group Title
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    means we need to find the value of x ( since option is interms of y) to substitute (sorry for my bad english)

    • 2 years ago
  26. pinkmommy Group Title
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    thats fine. how do i do that?

    • 2 years ago
  27. Rosh007 Group Title
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    what expression would you substitute into the first equation? -- from question we have second equation and can you tll me onc again what was second equation?

    • 2 years ago
  28. pinkmommy Group Title
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    -x-y=-8

    • 2 years ago
  29. Rosh007 Group Title
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    welll... what is -x = ???

    • 2 years ago
  30. pinkmommy Group Title
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    -1

    • 2 years ago
  31. pinkmommy Group Title
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    not trying to rush you but can you hurry && show me how to do this bc my son needs me right now. please && thank you :)

    • 2 years ago
  32. Rosh007 Group Title
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    can you check again... Clue ( the equality will not change when same number is added or subtracted or divided or multiplied)

    • 2 years ago
  33. Rosh007 Group Title
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    mmmm...ok... add -y to both sides of equal sign what you get?

    • 2 years ago
  34. pinkmommy Group Title
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    y = -8 - x

    • 2 years ago
  35. Rosh007 Group Title
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    -y and + y cancels so what is left?

    • 2 years ago
  36. pinkmommy Group Title
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    i gotta go sorry. thanks for all of your help.

    • 2 years ago
  37. Rosh007 Group Title
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    Ok I will write the steps.. so if you have any doubt can post here

    • 2 years ago
  38. Rosh007 Group Title
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    sorry this is corrct -x-y+y =-8+y (not -8-y, i made a mistak there) now -x = -8+y multiply both side by - sign we get x = 8-y which is th answer i am so sorry that I had to right the steps directly.. but hope you will commet.. if this dosn't get you..

    • 2 years ago
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