18c+75=21

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Solution for 18c+75=21 equation: 



18c+75=21

We move all terms to the left:

18c+75-(21)=0

We add all the numbers together, and all the variables

18c+54=0

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

18c=-54

c=-54/18

c=-3

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