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

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



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

We move all terms to the left:

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



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

2(x+6)+2(x-3)

We multiply parentheses

2x+2x+12-6

We add all the numbers together, and all the variables

4x+6

Back to the equation:

-(4x+6)



We get rid of parentheses

-4x-6+78=0

We add all the numbers together, and all the variables

-4x+72=0

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

-4x=-72

x=-72/-4

x=+18

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