Solve using the substitution method: y = -2x - 7 y = 3x + 3

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asked Mar 18, 2021 143k views

1 Answer

Ethan Barron · Answer 1 · 2021-03-22T17:18:17+0000

Substitute
So, -2x-7 = 3x + 3
+2x. +2x
-7= 5x +3
-5x. -5x

-5x-7= 3
+7. +7
-5x= 10

Divide -5 on both sides and you get x= -2

Then substitute -2 in the first equation

-2(-2)-7
4-7
Y= -3

Solve using the substitution method: y = -2x - 7 y = 3x + 3

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Solve using the substitution method: y = -2x - 7 y = 3x + 3