21-7x=5

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Solution for 21-7x=5 equation: 



21-7x=5

We move all terms to the left:

21-7x-(5)=0

We add all the numbers together, and all the variables

-7x+16=0

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

-7x=-16

x=-16/-7

x=2+2/7

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