21-3x=33

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Solution for 21-3x=33 equation: 



21-3x=33

We move all terms to the left:

21-3x-(33)=0

We add all the numbers together, and all the variables

-3x-12=0

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

-3x=12

x=12/-3

x=-4

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