# 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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