9x-21=19

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Solution for 9x-21=19 equation: 



9x-21=19

We move all terms to the left:

9x-21-(19)=0

We add all the numbers together, and all the variables

9x-40=0

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

9x=40

x=40/9

x=4+4/9

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