7=3(b+7)--1

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


7=3(b+7)- -1

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

Reorder the terms in parentheses
7=+(+3b+21)+1

Remove unnecessary parentheses
+7=+3b+21+1

We move all terms containing b to the left and all other terms to the right. 
-3b=+21+1-7

We simplify left and right side of the equation. 
-3b=+15

We divide both sides of the equation by -03 to get b. 
b=-5

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