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2(a+)+3(2a-1)=19
We move all terms to the left:
2(a+)+3(2a-1)-(19)=0
We add all the numbers together, and all the variables
2(+a)+3(2a-1)-19=0
We multiply parentheses
2a+6a-3-19=0
We add all the numbers together, and all the variables
8a-22=0
We move all terms containing a to the left, all other terms to the right
8a=22
a=22/8
a=2+3/4
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