What is -3x-3y=3 y=-5x-17 for substitution please show steps

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asked Oct 12, 2018 86.0k views

2 Answers

Daniel Egan · Answer 1 · 2018-10-12T07:48:10+0000

-3x-3(-5x-17)=3
-3x+15x+51=3
12x=48
x=3

If y is equivalent to an equation you can substitute that equation in for the y variable in the other equation bc they have the same value. Which it what I did.

Kelly Larsen · Answer 2 · 2018-10-16T23:46:40+0000

Take -5x + 3x = -2x

because there is a -3x and a 3x they cancel each other out.

and the -17 is left

-2x = -17

divide -2 by -17 = 8.5

What is -3x-3y=3 y=-5x-17 for substitution please show steps

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