47=x-21

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Solution for 47=x-21 equation: 



47=x-21

We move all terms to the left:

47-(x-21)=0

We get rid of parentheses

-x+21+47=0

We add all the numbers together, and all the variables

-1x+68=0

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

-x=-68

x=-68/-1

x=+68

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