2a=21-3a

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Solution for 2a=21-3a equation:


2a=21-3a

We simplify the equation to the form, which is simple to understand 
2a=21-3a

We move all terms containing a to the left and all other terms to the right. 
+2a+3a=+21

We simplify left and right side of the equation. 
+5a=+21

We divide both sides of the equation by 5 to get a. 
a=4.2

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