X=3
Y=7
work:
y=5x-8 (substitute)
3(5x-8)=x+18
15x-24=x+18
subtract 1x from both sides
14x-24=18
add 24 to both sides
14x=42
divide both sides by 14
x=3
y=5(3)-8
y=15-8
y=7
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