(5x-21)=(3-x)

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Solution for (5x-21)=(3-x) equation: 



(5x-21)=(3-x)

We move all terms to the left:

(5x-21)-((3-x))=0

We add all the numbers together, and all the variables

(5x-21)-((-1x+3))=0

We get rid of parentheses

5x-((-1x+3))-21=0



We calculate terms in parentheses: -((-1x+3)), so:

(-1x+3)

We get rid of parentheses

-1x+3

Back to the equation:

-(-1x+3)



We get rid of parentheses

5x+1x-3-21=0

We add all the numbers together, and all the variables

6x-24=0

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

6x=24

x=24/6

x=4

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