0
Your answer is x = 1 & y = -2
Given Equations:
2x-y=4
y=5x-7
Using Substitution
Substitute y for 5x-7 to simplify the equation to only 1 variable.
2x-(5x-7)=4
Simplify
a. 2x-5x+7=4
b. -3x=-3
c. x=1
Solve for y
Plug your x into the y equation
y=5*(1)-7
y=-2
Check your answers
Plug your variables into the multi-varible equation
2*(1)-(-2) = 4
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