15x-13-12x=(x-4)

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Solution for 15x-13-12x=(x-4) equation: 



15x-13-12x=(x-4)

We move all terms to the left:

15x-13-12x-((x-4))=0

We add all the numbers together, and all the variables

3x-((x-4))-13=0



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

(x-4)

We get rid of parentheses

x-4

Back to the equation:

-(x-4)



We get rid of parentheses

3x-x+4-13=0

We add all the numbers together, and all the variables

2x-9=0

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

2x=9

x=9/2

x=4+1/2

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