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math substitution method

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use the substitution method to solve
7x+5y=-26
x=28-6y

  • math substitution method - ,

    I know this!
    Put it in for x.

    So 7(28-6y) +5y=-26

    use that to get y, then plug your answer for y into one of the equations to get x

  • math substitution method - ,

    okay so then 196-42y+5y=-26
    then combined like terms so
    196+37y=-26
    37y=-222
    y=-6 is this part correct?

  • math substitution method - ,

    solve by using the substitution method.

    5x-3y=-25
    4x+34=y

  • math substitution method - ,

    m-3n=8

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