7a-21=75-5a

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Solution for 7a-21=75-5a equation:


7a-21=75-5a

We simplify the equation to the form, which is simple to understand 
7a-21=75-5a

We move all terms containing a to the left and all other terms to the right. 
+7a+5a=+75+21

We simplify left and right side of the equation. 
+12a=+96

We divide both sides of the equation by 12 to get a. 
a=8

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