21+x=2.50x

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Solution for 21+x=2.50x equation: 



21+x=2.50x

We move all terms to the left:

21+x-(2.50x)=0

We add all the numbers together, and all the variables

x-(+2.50x)+21=0

We get rid of parentheses

x-2.50x+21=0

We add all the numbers together, and all the variables

-1.5x+21=0

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

-1.5x=-21

x=-21/-1.5

x=+14

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