SOLUTION: x-y=4 y=2-5x
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Algebra: Expressions involving variables, substitution
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Question 129705
:
x-y=4
y=2-5x
Answer by
checkley71(8403)
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y=2-5x now substitute (2-5x) for y in the other equation
x-(2-5x)=4
x-2+5x=4
6x=4+2
6x=6
x=6/6
x=1 answer.
y=2-5*1
y=2-5
y=-3 answer.