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81=1/2(18)(x+7)
We simplify the equation to the form, which is simple to understand
81=1/2(18)*(x+7)
Simplifying:
81=0.5*(18)*(x+7)
Reorder the terms in parentheses
multiplication of parentheses
81=0.5*(+18x+126)
Reorder the terms in parentheses
81=+(+9x+63)
Remove unnecessary parentheses
+81=+9x+63
We move all terms containing x to the left and all other terms to the right.
-9x=+63-81
We simplify left and right side of the equation.
-9x=-18
We divide both sides of the equation by -09 to get x.
x=2
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