21-6x=51

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Solution for 21-6x=51 equation: 



21-6x=51

We move all terms to the left:

21-6x-(51)=0

We add all the numbers together, and all the variables

-6x-30=0

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

-6x=30

x=30/-6

x=-5

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