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3a-11=-3+7a
We move all terms to the left:
3a-11-(-3+7a)=0
We add all the numbers together, and all the variables
3a-(7a-3)-11=0
We get rid of parentheses
3a-7a+3-11=0
We add all the numbers together, and all the variables
-4a-8=0
We move all terms containing a to the left, all other terms to the right
-4a=8
a=8/-4
a=-2
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