15-42=4(x-1)-7

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Solution for 15-42=4(x-1)-7 equation: 



15-42=4(x-1)-7

We move all terms to the left:

15-42-(4(x-1)-7)=0

We add all the numbers together, and all the variables

-(4(x-1)-7)-27=0



We calculate terms in parentheses: -(4(x-1)-7), so:

4(x-1)-7

We multiply parentheses

4x-4-7

We add all the numbers together, and all the variables

4x-11

Back to the equation:

-(4x-11)



We get rid of parentheses

-4x+11-27=0

We add all the numbers together, and all the variables

-4x-16=0

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

-4x=16

x=16/-4

x=-4

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