3x-2=7(4-x)

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Solution for 3x-2=7(4-x) equation: 



3x-2=7(4-x)

We move all terms to the left:

3x-2-(7(4-x))=0

We add all the numbers together, and all the variables

3x-(7(-1x+4))-2=0



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

7(-1x+4)

We multiply parentheses

-7x+28

Back to the equation:

-(-7x+28)



We get rid of parentheses

3x+7x-28-2=0

We add all the numbers together, and all the variables

10x-30=0

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

10x=30

x=30/10

x=3

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