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91=1/2*7(12+b)
We simplify the equation to the form, which is simple to understand
91=1/2*7(12+b)
Simplifying:
91=1/14*(12+b)
Simplifying:
91=0.0714285714286*(12+b)
Reorder the terms in parentheses
91=+( + 0.857142857143 + 0.0714285714286b)
Remove unnecessary parentheses
+91=0.857142857143 + 0.0714285714286b
We move all terms containing b to the left and all other terms to the right.
-0.0714285714286b=0.857142857143-91
We simplify left and right side of the equation.
-0.0714285714286b=-90.1428571429
We divide both sides of the equation by -00.0714285714286 to get b.
b=1262
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