3(7-y)=3(2y+1)

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Solution for 3(7-y)=3(2y+1) equation:


3(7-y)=3(2y+1)

We simplify the equation to the form, which is simple to understand 
3(7-y)=3(2y+1)

Reorder the terms in parentheses
+(+21-3y)=3*(2y+1)

Remove unnecessary parentheses
+21-3y=+3+*(+2y+1+)

Reorder the terms in parentheses
+21-3y=+(+6y+3)

Remove unnecessary parentheses
+21-3y=+6y+3

We move all terms containing y to the left and all other terms to the right. 
-3y-6y=+3-21

We simplify left and right side of the equation. 
-9y=-18

We divide both sides of the equation by -9 to get y. 
y=2

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