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30+3c=25.50
We move all terms to the left:
30+3c-(25.50)=0
We add all the numbers together, and all the variables
3c+30-(25.5)=0
We add all the numbers together, and all the variables
3c+4.5=0
We move all terms containing c to the left, all other terms to the right
3c=-4.5
c=-4.5/3
c=-1+1/2
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