7c-10=30-c

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Solution for 7c-10=30-c equation: 



7c-10=30-c

We move all terms to the left:

7c-10-(30-c)=0

We add all the numbers together, and all the variables

7c-(-1c+30)-10=0

We get rid of parentheses

7c+1c-30-10=0

We add all the numbers together, and all the variables

8c-40=0

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

8c=40

c=40/8

c=5

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