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bleumom22 Group Title

Solve X+Y= 1 X-Y= 7

  • one year ago
  • one year ago

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  1. ashlynn143 Group Title
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    there has to be like one

    • one year ago
  2. ashlynn143 Group Title
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    of the answers

    • one year ago
  3. ashlynn143 Group Title
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    to the variables

    • one year ago
  4. ashlynn143 Group Title
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    is that the whole question ???

    • one year ago
  5. incomplte Group Title
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    Its a simultaenous equation do you have any ideas?

    • one year ago
  6. bleumom22 Group Title
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    yes thats the whole question the + equation is on top of the - equation

    • one year ago
  7. ashlynn143 Group Title
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    oh i hate question like this

    • one year ago
  8. bleumom22 Group Title
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    I don't have a clue it all looks foriegn to me. I looked through my notes and I see nothing similar to this problem.

    • one year ago
  9. ashlynn143 Group Title
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    yah i've learned some really tough things and i have never done something like this

    • one year ago
  10. incomplte Group Title
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    Start by\[X=1-Y\] Plug that into the second eqn

    • one year ago
  11. bleumom22 Group Title
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    ok but htne there aren't any values for the the other equations do I'm suiming it has to be a negative number. someone told me for a similar problem with one negative answer and one positive answer I could add both equations and then muliplty the result and substitute it for either varible to find the other. it worked for that problem but not for this one wwhere both answers are positive

    • one year ago
  12. bleumom22 Group Title
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    then*

    • one year ago
  13. ashlynn143 Group Title
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    well if it is like how @incomplte said then i have the answer but if it is like how you are saying then i dont know

    • one year ago
  14. bleumom22 Group Title
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    ok ill try it his way but im still coming up blank

    • one year ago
  15. ashlynn143 Group Title
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    ok for the second one it is 1 - (-7)

    • one year ago
  16. ashlynn143 Group Title
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    AND YOU WOULD GET ????

    • one year ago
  17. bleumom22 Group Title
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    8

    • one year ago
  18. incomplte Group Title
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    Eqn 2 becomes\[(1-Y)-Y = 7\] So1-2Y=7 -2Y=6 Y=-3

    • one year ago
  19. ashlynn143 Group Title
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    correct @bleumom22 see now you get for #2

    • one year ago
  20. incomplte Group Title
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    Can you solve for X now?

    • one year ago
  21. bleumom22 Group Title
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    just substitiue for y and then ill get the x variable?

    • one year ago
  22. incomplte Group Title
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    Good. Let me know what you get for X

    • one year ago
  23. bleumom22 Group Title
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    ok x=4?

    • one year ago
  24. incomplte Group Title
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    Yes.

    • one year ago
  25. ashlynn143 Group Title
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    good job

    • one year ago
  26. bleumom22 Group Title
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    im sorry can you tell me the first step to solving this.

    • one year ago
  27. incomplte Group Title
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    Glad to help :)

    • one year ago
  28. bleumom22 Group Title
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    I have two exams next week and need to remember this.

    • one year ago
  29. incomplte Group Title
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    Just start by Solving for X So from X+Y=1, say X=1-Y then plug that into the second equation.

    • one year ago
  30. bleumom22 Group Title
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    oooh. ok and then just input the answer for one of the variables then divide the varible by its self and the answer by its self to get the variable's value?

    • one year ago
  31. bleumom22 Group Title
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    as one of the varibles* to reverse calculate?

    • one year ago
  32. incomplte Group Title
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    Yes. If you have any more questions just @ my username. Ill get a notification and i can help later

    • one year ago
  33. ashlynn143 Group Title
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    and i will try to help you if you need it ok

    • one year ago
  34. bleumom22 Group Title
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    ok thank you to @incomplte and @ashlynn143

    • one year ago
  35. ashlynn143 Group Title
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    your welcome i gtg for like 15 min

    • one year ago
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