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6(a-5)+18=2(a-4)
We move all terms to the left:
6(a-5)+18-(2(a-4))=0
We multiply parentheses
6a-(2(a-4))-30+18=0
We calculate terms in parentheses: -(2(a-4)), so:We add all the numbers together, and all the variables
2(a-4)
We multiply parentheses
2a-8
Back to the equation:
-(2a-8)
6a-(2a-8)-12=0
We get rid of parentheses
6a-2a+8-12=0
We add all the numbers together, and all the variables
4a-4=0
We move all terms containing a to the left, all other terms to the right
4a=4
a=4/4
a=1
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