4a+7=2a+21

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Solution for 4a+7=2a+21 equation:


4a+7=2a+21

We simplify the equation to the form, which is simple to understand 
4a+7=2a+21

We move all terms containing a to the left and all other terms to the right. 
+4a-2a=+21-7

We simplify left and right side of the equation. 
+2a=+14

We divide both sides of the equation by 2 to get a. 
a=7

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