7*(a+50)/2=217

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Solution for 7*(a+50)/2=217 equation:


7*(a+50)/2=217

We simplify the equation to the form, which is simple to understand 
7*(a+50)/2=217

Reorder the terms in parentheses
+(+7a+350)/2=217

Reorder the terms in parentheses
+(+3.5a+175)=217

Remove unnecessary parentheses
+3.5a+175=+217

We move all terms containing a to the left and all other terms to the right. 
+3.5a=+217-175

We simplify left and right side of the equation. 
+3.5a=+42

We divide both sides of the equation by 3.5 to get a. 
a=12

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