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b+20b=12
We simplify the equation to the form, which is simple to understand
b+20b=12
We move all terms containing b to the left and all other terms to the right.
+1b+20b=+12
We simplify left and right side of the equation.
+21b=+12
We divide both sides of the equation by 21 to get b.
b=0.571428571429
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