2c-7c=30

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Solution for 2c-7c=30 equation: 



2c-7c=30

We move all terms to the left:

2c-7c-(30)=0

We add all the numbers together, and all the variables

-5c-30=0

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

-5c=30

c=30/-5

c=-6

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