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-2.5\times 8=x-8y
Multiply both sides by 8.
-20=x-8y
Multiply -2.5 and 8 to get -20.
x-8y=-20
Swap sides so that all variable terms are on the left hand side.
x=-20+8y
Add 8y to both sides.
-2.5\times 8=x-8y
Multiply both sides by 8.
-20=x-8y
Multiply -2.5 and 8 to get -20.
x-8y=-20
Swap sides so that all variable terms are on the left hand side.
-8y=-20-x
Subtract x from both sides.
-8y=-x-20
The equation is in standard form.
\frac{-8y}{-8}=\frac{-x-20}{-8}
Divide both sides by -8.
y=\frac{-x-20}{-8}
Dividing by -8 undoes the multiplication by -8.
y=\frac{x}{8}+\frac{5}{2}
Divide -20-x by -8.