Solve for x
x=y-7
Solve for y
y=x+7
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5x-y-4x=-7
Subtract 4x from both sides.
x-y=-7
Combine 5x and -4x to get x.
x=-7+y
Add y to both sides.
-y=4x-7-5x
Subtract 5x from both sides.
-y=-x-7
Combine 4x and -5x to get -x.
\frac{-y}{-1}=\frac{-x-7}{-1}
Divide both sides by -1.
y=\frac{-x-7}{-1}
Dividing by -1 undoes the multiplication by -1.
y=x+7
Divide -x-7 by -1.
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Limits
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