3a-12-1a=2-5a

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Solution for 3a-12-1a=2-5a equation: 



3a-12-1a=2-5a

We move all terms to the left:

3a-12-1a-(2-5a)=0

We add all the numbers together, and all the variables

3a-1a-(-5a+2)-12=0

We add all the numbers together, and all the variables

2a-(-5a+2)-12=0

We get rid of parentheses

2a+5a-2-12=0

We add all the numbers together, and all the variables

7a-14=0

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

7a=14

a=14/7

a=2

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