21x-1=104

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Solution for 21x-1=104 equation: 



21x-1=104

We move all terms to the left:

21x-1-(104)=0

We add all the numbers together, and all the variables

21x-105=0

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

21x=105

x=105/21

x=5

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