21-3x=48

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Solution for 21-3x=48 equation: 



21-3x=48

We move all terms to the left:

21-3x-(48)=0

We add all the numbers together, and all the variables

-3x-27=0

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

-3x=27

x=27/-3

x=-9

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