122=13x-21

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Solution for 122=13x-21 equation: 



122=13x-21

We move all terms to the left:

122-(13x-21)=0

We get rid of parentheses

-13x+21+122=0

We add all the numbers together, and all the variables

-13x+143=0

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

-13x=-143

x=-143/-13

x=+11

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