15=(-2c)+9

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Solution for 15=(-2c)+9 equation: 



15=(-2c)+9

We move all terms to the left:

15-((-2c)+9)=0



We calculate terms in parentheses: -((-2c)+9), so:

(-2c)+9

We get rid of parentheses

-2c+9

Back to the equation:

-(-2c+9)



We get rid of parentheses

2c-9+15=0

We add all the numbers together, and all the variables

2c+6=0

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

2c=-6

c=-6/2

c=-3

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