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anonymous

  • one year ago

solving systems of equations by elimination -x + 9y = -5 x - 5y = 1

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  1. haleyelizabeth2017
    • one year ago
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    Add the second equation to the first equation to get 4y=-4

  2. haleyelizabeth2017
    • one year ago
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    Then, divide -4 by 4 to get y=-1. Plug in -1 for y into either equation and solve for x.

  3. haleyelizabeth2017
    • one year ago
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    x-5y=1 x-5(-1)=1 x+5=1 x=-4

  4. haleyelizabeth2017
    • one year ago
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    Then plug x and y back into either equation to check your answer.

  5. anonymous
    • one year ago
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    do i add or subtract them

  6. haleyelizabeth2017
    • one year ago
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    add :)

  7. anonymous
    • one year ago
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    ty :D

  8. haleyelizabeth2017
    • one year ago
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    No problem!

  9. anonymous
    • one year ago
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    -4+-1

  10. anonymous
    • one year ago
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    with will be -5

  11. anonymous
    • one year ago
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    whitch*

  12. haleyelizabeth2017
    • one year ago
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    Wait..

  13. haleyelizabeth2017
    • one year ago
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    -(-4) + 9(-1) = -5 (-4) - 5(-1) = 1 Plug them into these equations to check

  14. anonymous
    • one year ago
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    omg im new too this subject lol like ugh

  15. haleyelizabeth2017
    • one year ago
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    haha don't worry about it, you'll get the hang of it!

  16. haleyelizabeth2017
    • one year ago
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    just know...the solution would be (-4, -1)

  17. anonymous
    • one year ago
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    for the answer right ill let you kno if i need help on the next one

  18. haleyelizabeth2017
    • one year ago
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    Okay

  19. haleyelizabeth2017
    • one year ago
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    Did you understand how I got that?

  20. anonymous
    • one year ago
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    thanks again

  21. haleyelizabeth2017
    • one year ago
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    No problem!

  22. anonymous
    • one year ago
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    y = 2/3x-1 y=3

  23. anonymous
    • one year ago
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    y = 2/3x-1 y=3

  24. haleyelizabeth2017
    • one year ago
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    are those the two equations given?

  25. anonymous
    • one year ago
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    yes

  26. haleyelizabeth2017
    • one year ago
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    okay, so 3=2/3x-1 y is given so we have (_, 3) so far.

  27. anonymous
    • one year ago
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    ok

  28. haleyelizabeth2017
    • one year ago
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    3+1=2/3x 4=2/3x 4*3/2=x x=6 so (6, 3) :)

  29. anonymous
    • one year ago
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    THANKS!

  30. haleyelizabeth2017
    • one year ago
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    No problem!

  31. anonymous
    • one year ago
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    8 more to go idk if you going to help me with all this lmao

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