21x-7=12

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Solution for 21x-7=12 equation: 



21x-7=12

We move all terms to the left:

21x-7-(12)=0

We add all the numbers together, and all the variables

21x-19=0

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

21x=19

x=19/21

x=19/21

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