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(12+x)0.5=30
We move all terms to the left:
(12+x)0.5-(30)=0
We add all the numbers together, and all the variables
(x+12)0.5-30=0
We multiply parentheses
0.5x+6-30=0
We add all the numbers together, and all the variables
0.5x-24=0
We move all terms containing x to the left, all other terms to the right
0.5x=24
x=24/0.5
x=48
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