-765=-9(7x-20)

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Solution for -765=-9(7x-20) equation: 



-765=-9(7x-20)

We move all terms to the left:

-765-(-9(7x-20))=0



We calculate terms in parentheses: -(-9(7x-20)), so:

-9(7x-20)

We multiply parentheses

-63x+180

Back to the equation:

-(-63x+180)



We get rid of parentheses

63x-180-765=0

We add all the numbers together, and all the variables

63x-945=0

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

63x=945

x=945/63

x=15

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