15-b=12

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Solution for 15-b=12 equation:


15-b=12

We simplify the equation to the form, which is simple to understand 
15-b=12

We move all terms containing b to the left and all other terms to the right. 
-1b=+12-15

We simplify left and right side of the equation. 
-1b=-3

We divide both sides of the equation by -1 to get b. 
b=3

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