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2a-7=4a+4
We move all terms to the left:
2a-7-(4a+4)=0
We get rid of parentheses
2a-4a-4-7=0
We add all the numbers together, and all the variables
-2a-11=0
We move all terms containing a to the left, all other terms to the right
-2a=11
a=11/-2
a=-5+1/2
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