21x-19=90

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Solution for 21x-19=90 equation: 



21x-19=90

We move all terms to the left:

21x-19-(90)=0

We add all the numbers together, and all the variables

21x-109=0

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

21x=109

x=109/21

x=5+4/21

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