78=-2(x-5)-6(x-2)

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Solution for 78=-2(x-5)-6(x-2) equation: 



78=-2(x-5)-6(x-2)

We move all terms to the left:

78-(-2(x-5)-6(x-2))=0



We calculate terms in parentheses: -(-2(x-5)-6(x-2)), so:

-2(x-5)-6(x-2)

We multiply parentheses

-2x-6x+10+12

We add all the numbers together, and all the variables

-8x+22

Back to the equation:

-(-8x+22)



We get rid of parentheses

8x-22+78=0

We add all the numbers together, and all the variables

8x+56=0

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

8x=-56

x=-56/8

x=-7

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