7(3+6x)=-231

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Solution for 7(3+6x)=-231 equation: 



7(3+6x)=-231

We move all terms to the left:

7(3+6x)-(-231)=0

We add all the numbers together, and all the variables

7(6x+3)-(-231)=0

We add all the numbers together, and all the variables

7(6x+3)+231=0

We multiply parentheses

42x+21+231=0

We add all the numbers together, and all the variables

42x+252=0

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

42x=-252

x=-252/42

x=-6

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