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5(3+2a)=104.50
We move all terms to the left:
5(3+2a)-(104.50)=0
We add all the numbers together, and all the variables
5(2a+3)-(104.5)=0
We add all the numbers together, and all the variables
5(2a+3)-104.5=0
We multiply parentheses
10a+15-104.5=0
We add all the numbers together, and all the variables
10a-89.5=0
We move all terms containing a to the left, all other terms to the right
10a=89.5
a=89.5/10
a=8+6.3333333333333/6.6666666666667
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