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43(3a+2)+6=81
We move all terms to the left:
43(3a+2)+6-(81)=0
We add all the numbers together, and all the variables
43(3a+2)-75=0
We multiply parentheses
129a+86-75=0
We add all the numbers together, and all the variables
129a+11=0
We move all terms containing a to the left, all other terms to the right
129a=-11
a=-11/129
a=-11/129
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