-2x-9-x=-42

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Solution for -2x-9-x=-42 equation: 



-2x-9-x=-42

We move all terms to the left:

-2x-9-x-(-42)=0

We add all the numbers together, and all the variables

-3x+33=0

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

-3x=-33

x=-33/-3

x=+11

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