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12b=-2b-7
We simplify the equation to the form, which is simple to understand
12b=-2b-7
We move all terms containing b to the left and all other terms to the right.
+12b+2b=-7
We simplify left and right side of the equation.
+14b=-7
We divide both sides of the equation by 14 to get b.
b=-0.5
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