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74=-2(-4b+8)+5(3b-5)
We simplify the equation to the form, which is simple to understand
74=-2(-4b+8)+5(3b-5)
Reorder the terms in parentheses
74=+(+8b-16)+5*(3b-5)
Remove unnecessary parentheses
+74=+8b-16+5+*(+3b-5+)
Reorder the terms in parentheses
74=+8b-16+(+15b-25)
Remove unnecessary parentheses
+74=+8b-16+15b-25
We move all terms containing b to the left and all other terms to the right.
-8b-15b=-16-25-74
We simplify left and right side of the equation.
-23b=-115
We divide both sides of the equation by -23 to get b.
b=5
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