105=-3(7+6x)

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Solution for 105=-3(7+6x) equation: 



105=-3(7+6x)

We move all terms to the left:

105-(-3(7+6x))=0

We add all the numbers together, and all the variables

-(-3(6x+7))+105=0



We calculate terms in parentheses: -(-3(6x+7)), so:

-3(6x+7)

We multiply parentheses

-18x-21

Back to the equation:

-(-18x-21)



We get rid of parentheses

18x+21+105=0

We add all the numbers together, and all the variables

18x+126=0

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

18x=-126

x=-126/18

x=-7

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