6x+3(5x+9)=-99

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Solution for 6x+3(5x+9)=-99 equation: 



6x+3(5x+9)=-99

We move all terms to the left:

6x+3(5x+9)-(-99)=0

We add all the numbers together, and all the variables

6x+3(5x+9)+99=0

We multiply parentheses

6x+15x+27+99=0

We add all the numbers together, and all the variables

21x+126=0

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

21x=-126

x=-126/21

x=-6

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