99=-6x+(-6x-15)

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Solution for 99=-6x+(-6x-15) equation: 



99=-6x+(-6x-15)

We move all terms to the left:

99-(-6x+(-6x-15))=0



We calculate terms in parentheses: -(-6x+(-6x-15)), so:

-6x+(-6x-15)

We get rid of parentheses

-6x-6x-15

We add all the numbers together, and all the variables

-12x-15

Back to the equation:

-(-12x-15)



We get rid of parentheses

12x+15+99=0

We add all the numbers together, and all the variables

12x+114=0

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

12x=-114

x=-114/12

x=-9+1/2

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