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246=2b-4(5-9b)
We simplify the equation to the form, which is simple to understand
246=2b-4(5-9b)
Reorder the terms in parentheses
246=2b+(-20+36b)
Remove unnecessary parentheses
+246=+2b-20+36b
We move all terms containing b to the left and all other terms to the right.
-2b-36b=-20-246
We simplify left and right side of the equation.
-38b=-266
We divide both sides of the equation by -38 to get b.
b=7
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