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(13+1.50a)=35.50
We move all terms to the left:
(13+1.50a)-(35.50)=0
We add all the numbers together, and all the variables
(1.50a+13)-(35.5)=0
We add all the numbers together, and all the variables
(1.50a+13)-35.5=0
We get rid of parentheses
1.50a+13-35.5=0
We add all the numbers together, and all the variables
1.50a-22.5=0
We move all terms containing a to the left, all other terms to the right
1.50a=22.5
a=22.5/1.50
a=15
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