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-7(-7a-8)=-238
We move all terms to the left:
-7(-7a-8)-(-238)=0
We add all the numbers together, and all the variables
-7(-7a-8)+238=0
We multiply parentheses
49a+56+238=0
We add all the numbers together, and all the variables
49a+294=0
We move all terms containing a to the left, all other terms to the right
49a=-294
a=-294/49
a=-6
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