3a-4=20-a

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Solution for 3a-4=20-a equation: 



3a-4=20-a

We move all terms to the left:

3a-4-(20-a)=0

We add all the numbers together, and all the variables

3a-(-1a+20)-4=0

We get rid of parentheses

3a+1a-20-4=0

We add all the numbers together, and all the variables

4a-24=0

We move all terms containing a to the left, all other terms to the right

4a=24

a=24/4

a=6

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