121=25x+21

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Solution for 121=25x+21 equation: 



121=25x+21

We move all terms to the left:

121-(25x+21)=0

We get rid of parentheses

-25x-21+121=0

We add all the numbers together, and all the variables

-25x+100=0

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

-25x=-100

x=-100/-25

x=+4

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