30=3x-(x-6)

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Solution for 30=3x-(x-6) equation: 



30=3x-(x-6)

We move all terms to the left:

30-(3x-(x-6))=0



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

3x-(x-6)

We get rid of parentheses

3x-x+6

We add all the numbers together, and all the variables

2x+6

Back to the equation:

-(2x+6)



We get rid of parentheses

-2x-6+30=0

We add all the numbers together, and all the variables

-2x+24=0

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

-2x=-24

x=-24/-2

x=+12

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