Solve the system of equations by the substitution method. 3x-5y=18 y=x-4

asked Nov 19, 2023 154k views

13 votes

Solve the system of equations by the substitution method.

3x-5y=18
y=x-4

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5 votes

3x - 5y = 18
3x - 5(x - 4) = 18
3x - 5x + 20 = 18
-2x + 20 = 18
-2x = -2
x = 1
—————————
y = x - 4
y = 1 - 4
y = -3

Gwyneth answered Nov 26, 2023

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