(7x-21)=(-5x+75)

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Solution for (7x-21)=(-5x+75) equation: 



(7x-21)=(-5x+75)

We move all terms to the left:

(7x-21)-((-5x+75))=0

We get rid of parentheses

7x-((-5x+75))-21=0



We calculate terms in parentheses: -((-5x+75)), so:

(-5x+75)

We get rid of parentheses

-5x+75

Back to the equation:

-(-5x+75)



We get rid of parentheses

7x+5x-75-21=0

We add all the numbers together, and all the variables

12x-96=0

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

12x=96

x=96/12

x=8

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