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9a-4+3(a-11)=2.3
We move all terms to the left:
9a-4+3(a-11)-(2.3)=0
We add all the numbers together, and all the variables
9a+3(a-11)-6.3=0
We multiply parentheses
9a+3a-33-6.3=0
We add all the numbers together, and all the variables
12a-39.3=0
We move all terms containing a to the left, all other terms to the right
12a=39.3
a=39.3/12
a=3+1/3.63636363636
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