7x-(4x=9)=4x-42

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Solution for 7x-(4x=9)=4x-42 equation: 



7x-(4x=9)=4x-42

We move all terms to the left:

7x-(4x-(9))=0

We get rid of parentheses

7x-4x+9=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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