21=2(5x-2)

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Solution for 21=2(5x-2) equation: 



21=2(5x-2)

We move all terms to the left:

21-(2(5x-2))=0



We calculate terms in parentheses: -(2(5x-2)), so:

2(5x-2)

We multiply parentheses

10x-4

Back to the equation:

-(10x-4)



We get rid of parentheses

-10x+4+21=0

We add all the numbers together, and all the variables

-10x+25=0

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

-10x=-25

x=-25/-10

x=2+1/2

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