2x-9x=42

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Solution for 2x-9x=42 equation: 



2x-9x=42

We move all terms to the left:

2x-9x-(42)=0

We add all the numbers together, and all the variables

-7x-42=0

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

-7x=42

x=42/-7

x=-6

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