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0.5(c-1)=18
We move all terms to the left:
0.5(c-1)-(18)=0
We multiply parentheses
0.5c-0.5-18=0
We add all the numbers together, and all the variables
0.5c-18.5=0
We move all terms containing c to the left, all other terms to the right
0.5c=18.5
c=18.5/0.5
c=37
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