3x+6(x+4)=-21

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Solution for 3x+6(x+4)=-21 equation: 



3x+6(x+4)=-21

We move all terms to the left:

3x+6(x+4)-(-21)=0

We add all the numbers together, and all the variables

3x+6(x+4)+21=0

We multiply parentheses

3x+6x+24+21=0

We add all the numbers together, and all the variables

9x+45=0

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

9x=-45

x=-45/9

x=-5

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