20=5^2+15x-20

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Solution for 20=5^2+15x-20 equation: 



20=5^2+15x-20

We move all terms to the left:

20-(5^2+15x-20)=0

We get rid of parentheses

-15x+20+20-5^2=0

We add all the numbers together, and all the variables

-15x+15=0

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

-15x=-15

x=-15/-15

x=1

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