21-4=(2x-3)

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Solution for 21-4=(2x-3) equation: 



21-4=(2x-3)

We move all terms to the left:

21-4-((2x-3))=0

We add all the numbers together, and all the variables

-((2x-3))+17=0



We calculate terms in parentheses: -((2x-3)), so:

(2x-3)

We get rid of parentheses

2x-3

Back to the equation:

-(2x-3)



We get rid of parentheses

-2x+3+17=0

We add all the numbers together, and all the variables

-2x+20=0

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

-2x=-20

x=-20/-2

x=+10

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