3(b-1)=21

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Solution for 3(b-1)=21 equation:


3(b-1)=21

We simplify the equation to the form, which is simple to understand 
3(b-1)=21

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

Remove unnecessary parentheses
+3b-3=+21

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

We simplify left and right side of the equation. 
+3b=+24

We divide both sides of the equation by 3 to get b. 
b=8

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