x=5^2-20x

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Solution for x=5^2-20x equation: 



x=5^2-20x

We move all terms to the left:

x-(5^2-20x)=0

We get rid of parentheses

x+20x-5^2=0

We add all the numbers together, and all the variables

21x-25=0

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

21x=25

x=25/21

x=1+4/21

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