3-4a=2a-21

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Solution for 3-4a=2a-21 equation:


3-4a=2a-21

We simplify the equation to the form, which is simple to understand 
3-4a=2a-21

We move all terms containing a to the left and all other terms to the right. 
-4a-2a=-21-3

We simplify left and right side of the equation. 
-6a=-24

We divide both sides of the equation by -6 to get a. 
a=4

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