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3b+20=6b-40
We simplify the equation to the form, which is simple to understand
3b+20=6b-40
We move all terms containing b to the left and all other terms to the right.
+3b-6b=-40-20
We simplify left and right side of the equation.
-3b=-60
We divide both sides of the equation by -3 to get b.
b=20
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