-78=-7x+4(-x-3)

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Solution for -78=-7x+4(-x-3) equation: 



-78=-7x+4(-x-3)

We move all terms to the left:

-78-(-7x+4(-x-3))=0

We add all the numbers together, and all the variables

-(-7x+4(-1x-3))-78=0



We calculate terms in parentheses: -(-7x+4(-1x-3)), so:

-7x+4(-1x-3)

We multiply parentheses

-7x-4x-12

We add all the numbers together, and all the variables

-11x-12

Back to the equation:

-(-11x-12)



We get rid of parentheses

11x+12-78=0

We add all the numbers together, and all the variables

11x-66=0

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

11x=66

x=66/11

x=6

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