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4b+2b-7=11
We simplify the equation to the form, which is simple to understand
4b+2b-7=11
We move all terms containing b to the left and all other terms to the right.
+4b+2b=+11+7
We simplify left and right side of the equation.
+6b=+18
We divide both sides of the equation by 6 to get b.
b=3
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