21-43=3(x-3)-4

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Solution for 21-43=3(x-3)-4 equation: 



21-43=3(x-3)-4

We move all terms to the left:

21-43-(3(x-3)-4)=0

We add all the numbers together, and all the variables

-(3(x-3)-4)-22=0



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

3(x-3)-4

We multiply parentheses

3x-9-4

We add all the numbers together, and all the variables

3x-13

Back to the equation:

-(3x-13)



We get rid of parentheses

-3x+13-22=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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