4x-21=3(2x-7)-4(2x+3)

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Solution for 4x-21=3(2x-7)-4(2x+3) equation: 



4x-21=3(2x-7)-4(2x+3)

We move all terms to the left:

4x-21-(3(2x-7)-4(2x+3))=0



We calculate terms in parentheses: -(3(2x-7)-4(2x+3)), so:

3(2x-7)-4(2x+3)

We multiply parentheses

6x-8x-21-12

We add all the numbers together, and all the variables

-2x-33

Back to the equation:

-(-2x-33)



We get rid of parentheses

4x+2x+33-21=0

We add all the numbers together, and all the variables

6x+12=0

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

6x=-12

x=-12/6

x=-2

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