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(3a+55)=a
We move all terms to the left:
(3a+55)-(a)=0
We add all the numbers together, and all the variables
-1a+(3a+55)=0
We get rid of parentheses
-1a+3a+55=0
We add all the numbers together, and all the variables
2a+55=0
We move all terms containing a to the left, all other terms to the right
2a=-55
a=-55/2
a=-27+1/2
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