15=3(y-1)

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Solution for 15=3(y-1) equation:


15=3(y-1)

We simplify the equation to the form, which is simple to understand 
15=3(y-1)

Reorder the terms in parentheses
15=+(+3y-3)

Remove unnecessary parentheses
+15=+3y-3

We move all terms containing y to the left and all other terms to the right. 
-3y=-3-15

We simplify left and right side of the equation. 
-3y=-18

We divide both sides of the equation by -03 to get y. 
y=6

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