21-43=3(x-1)-7=

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Solution for 21-43=3(x-1)-7= equation: 



21-43=3(x-1)-7=

We move all terms to the left:

21-43-(3(x-1)-7)=0

We add all the numbers together, and all the variables

-(3(x-1)-7)-22=0



We calculate terms in parentheses: -(3(x-1)-7), so:

3(x-1)-7

We multiply parentheses

3x-3-7

We add all the numbers together, and all the variables

3x-10

Back to the equation:

-(3x-10)



We get rid of parentheses

-3x+10-22=0

We add all the numbers together, and all the variables

-3x-12=0

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

-3x=12

x=12/-3

x=-4

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