21-y=2y-87

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Solution for 21-y=2y-87 equation:


21-y=2y-87

We simplify the equation to the form, which is simple to understand 
21-y=2y-87

We move all terms containing y to the left and all other terms to the right. 
-1y-2y=-87-21

We simplify left and right side of the equation. 
-3y=-108

We divide both sides of the equation by -3 to get y. 
y=36

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