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0.35c+0.20(12-c)=3.45
We move all terms to the left:
0.35c+0.20(12-c)-(3.45)=0
We add all the numbers together, and all the variables
0.35c+0.20(-1c+12)-(3.45)=0
We add all the numbers together, and all the variables
0.35c+0.20(-1c+12)-3.45=0
We multiply parentheses
0.35c-0.2c+2.4-3.45=0
We add all the numbers together, and all the variables
0.15c-1.05=0
We move all terms containing c to the left, all other terms to the right
0.15c=1.05
c=1.05/0.15
c=7
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