3a+4=a-8=

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Solution for 3a+4=a-8= equation: 



3a+4=a-8=

We move all terms to the left:

3a+4-(a-8)=0

We get rid of parentheses

3a-a+8+4=0

We add all the numbers together, and all the variables

2a+12=0

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

2a=-12

a=-12/2

a=-6

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