2x+121=9x-12

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Solution for 2x+121=9x-12 equation: 



2x+121=9x-12

We move all terms to the left:

2x+121-(9x-12)=0

We get rid of parentheses

2x-9x+12+121=0

We add all the numbers together, and all the variables

-7x+133=0

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

-7x=-133

x=-133/-7

x=+19

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