2(c+9)=30

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Solution for 2(c+9)=30 equation: 



2(c+9)=30

We move all terms to the left:

2(c+9)-(30)=0

We multiply parentheses

2c+18-30=0

We add all the numbers together, and all the variables

2c-12=0

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

2c=12

c=12/2

c=6

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