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4(a-3)+2(a-)=7
We move all terms to the left:
4(a-3)+2(a-)-(7)=0
We add all the numbers together, and all the variables
4(a-3)+2a-7=0
We add all the numbers together, and all the variables
2a+4(a-3)-7=0
We multiply parentheses
2a+4a-12-7=0
We add all the numbers together, and all the variables
6a-19=0
We move all terms containing a to the left, all other terms to the right
6a=19
a=19/6
a=3+1/6
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