90=1/2(h)(8+7)

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Solution for 90=1/2(h)(8+7) equation:


90=1/2(h)(8+7)

We simplify the equation to the form, which is simple to understand 
90=1/2(h)*(8+7)

Reorder the terms in parentheses
multiplication of parentheses
90=0.5*(+15h)



Reorder the terms in parentheses
90=+(+7.5h)

Remove unnecessary parentheses
+90=+7.5h

We move all terms containing h to the left and all other terms to the right. 
-7.5h=-90

We simplify left and right side of the equation. 
-7.5h=-90

We divide both sides of the equation by -07.5 to get h. 
h=12

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