78=-2(3+5x)-4x

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Solution for 78=-2(3+5x)-4x equation: 



78=-2(3+5x)-4x

We move all terms to the left:

78-(-2(3+5x)-4x)=0

We add all the numbers together, and all the variables

-(-2(5x+3)-4x)+78=0



We calculate terms in parentheses: -(-2(5x+3)-4x), so:

-2(5x+3)-4x

We add all the numbers together, and all the variables

-4x-2(5x+3)

We multiply parentheses

-4x-10x-6

We add all the numbers together, and all the variables

-14x-6

Back to the equation:

-(-14x-6)



We get rid of parentheses

14x+6+78=0

We add all the numbers together, and all the variables

14x+84=0

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

14x=-84

x=-84/14

x=-6

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