-21=-5x+2(x-6)

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Solution for -21=-5x+2(x-6) equation: 



-21=-5x+2(x-6)

We move all terms to the left:

-21-(-5x+2(x-6))=0



We calculate terms in parentheses: -(-5x+2(x-6)), so:

-5x+2(x-6)

We multiply parentheses

-5x+2x-12

We add all the numbers together, and all the variables

-3x-12

Back to the equation:

-(-3x-12)



We get rid of parentheses

3x+12-21=0

We add all the numbers together, and all the variables

3x-9=0

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

3x=9

x=9/3

x=3

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