-21=-6(2x+5)-3

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Solution for -21=-6(2x+5)-3 equation: 



-21=-6(2x+5)-3

We move all terms to the left:

-21-(-6(2x+5)-3)=0



We calculate terms in parentheses: -(-6(2x+5)-3), so:

-6(2x+5)-3

We multiply parentheses

-12x-30-3

We add all the numbers together, and all the variables

-12x-33

Back to the equation:

-(-12x-33)



We get rid of parentheses

12x+33-21=0

We add all the numbers together, and all the variables

12x+12=0

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

12x=-12

x=-12/12

x=-1

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