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2b-11+2b-11+b=18
We simplify the equation to the form, which is simple to understand
2b-11+2b-11+b=18
We move all terms containing b to the left and all other terms to the right.
+2b+2b+1b=+18+11+11
We simplify left and right side of the equation.
+5b=+40
We divide both sides of the equation by 5 to get b.
b=8
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