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anonymous

  • one year ago

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation. 3x + 2y = -21 x - 3y = 4

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  1. LynFran
    • one year ago
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    3x+2y=-21 ...equation 1 x-3y=4 ....equation 2 x=4+3y .....equation 3 sub equation 3 into equation 1 we get 3(4+3y) +2y = -21 ........

  2. LynFran
    • one year ago
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    can solve for the solutions from there??? @xangelaax

  3. anonymous
    • one year ago
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    these were the options bc i solved for y 3(3y + 4) + 2y = -21 3(-3y + 4) + 2y = -21 3x + 2(3y + 4) = -21 3x + 2(-3y + 4) = -21

  4. LynFran
    • one year ago
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    well if you look back at my previous post u will see the answer in ur options...

  5. anonymous
    • one year ago
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    sorry thanks so much

  6. LynFran
    • one year ago
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    now which one is it?

  7. anonymous
    • one year ago
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    first

  8. LynFran
    • one year ago
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    correct

  9. LynFran
    • one year ago
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    ur welcome

  10. anonymous
    • one year ago
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    yay thanks

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