18+9c=7c

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Solution for 18+9c=7c equation: 



18+9c=7c

We move all terms to the left:

18+9c-(7c)=0

We add all the numbers together, and all the variables

2c+18=0

We move all terms containing c to the left, all other terms to the right

2c=-18

c=-18/2

c=-9

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