21+2x=-2x+3(5x-4)

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Solution for 21+2x=-2x+3(5x-4) equation: 



21+2x=-2x+3(5x-4)

We move all terms to the left:

21+2x-(-2x+3(5x-4))=0



We calculate terms in parentheses: -(-2x+3(5x-4)), so:

-2x+3(5x-4)

We multiply parentheses

-2x+15x-12

We add all the numbers together, and all the variables

13x-12

Back to the equation:

-(13x-12)



We get rid of parentheses

2x-13x+12+21=0

We add all the numbers together, and all the variables

-11x+33=0

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

-11x=-33

x=-33/-11

x=+3

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