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7b-5b-2=18
We simplify the equation to the form, which is simple to understand
7b-5b-2=18
We move all terms containing b to the left and all other terms to the right.
+7b-5b=+18+2
We simplify left and right side of the equation.
+2b=+20
We divide both sides of the equation by 2 to get b.
b=10
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