78=-2(x-3)-6x

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Solution for 78=-2(x-3)-6x equation: 



78=-2(x-3)-6x

We move all terms to the left:

78-(-2(x-3)-6x)=0



We calculate terms in parentheses: -(-2(x-3)-6x), so:

-2(x-3)-6x

We add all the numbers together, and all the variables

-6x-2(x-3)

We multiply parentheses

-6x-2x+6

We add all the numbers together, and all the variables

-8x+6

Back to the equation:

-(-8x+6)



We get rid of parentheses

8x-6+78=0

We add all the numbers together, and all the variables

8x+72=0

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

8x=-72

x=-72/8

x=-9

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