21-15=2(x-2)

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Solution for 21-15=2(x-2) equation: 



21-15=2(x-2)

We move all terms to the left:

21-15-(2(x-2))=0

We add all the numbers together, and all the variables

-(2(x-2))+6=0



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

2(x-2)

We multiply parentheses

2x-4

Back to the equation:

-(2x-4)



We get rid of parentheses

-2x+4+6=0

We add all the numbers together, and all the variables

-2x+10=0

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

-2x=-10

x=-10/-2

x=+5

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