30=2(10-c)

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Solution for 30=2(10-c) equation: 



30=2(10-c)

We move all terms to the left:

30-(2(10-c))=0

We add all the numbers together, and all the variables

-(2(-1c+10))+30=0



We calculate terms in parentheses: -(2(-1c+10)), so:

2(-1c+10)

We multiply parentheses

-2c+20

Back to the equation:

-(-2c+20)



We get rid of parentheses

2c-20+30=0

We add all the numbers together, and all the variables

2c+10=0

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

2c=-10

c=-10/2

c=-5

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