7x/5x-20

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Solution for 7x/5x-20 equation: 


x in (-oo:+oo)

((7*x)/5)*x-20 = 0

7/5*x^2 = 20 // : 7/5

x^2 = 100/7

x^2 = 100/7 // ^ 1/2

abs(x) = (100/7)^(1/2)

x = (100/7)^(1/2) or x = -(100/7)^(1/2)

x in { (100/7)^(1/2), -(100/7)^(1/2) }

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