15=-(b-8)

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Solution for 15=-(b-8) equation:


15=-(b-8)

We simplify the equation to the form, which is simple to understand 
15=-(b-8)

Remove unnecessary parentheses
15=-1b+8

We move all terms containing b to the left and all other terms to the right. 
+1b=+8-15

We simplify left and right side of the equation. 
+1b=-7

We divide both sides of the equation by 01 to get b. 
b=-7

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