15x=20(x-9)

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Solution for 15x=20(x-9) equation: 



15x=20(x-9)

We move all terms to the left:

15x-(20(x-9))=0



We calculate terms in parentheses: -(20(x-9)), so:

20(x-9)

We multiply parentheses

20x-180

Back to the equation:

-(20x-180)



We get rid of parentheses

15x-20x+180=0

We add all the numbers together, and all the variables

-5x+180=0

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

-5x=-180

x=-180/-5

x=+36

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