15=-7b+7+3b

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Solution for 15=-7b+7+3b equation:


15=-7b+7+3b

We simplify the equation to the form, which is simple to understand 
15=-7b+7+3b

We move all terms containing b to the left and all other terms to the right. 
+7b-3b=+7-15

We simplify left and right side of the equation. 
+4b=-8

We divide both sides of the equation by 4 to get b. 
b=-2

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