21x/3x-21

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Solution for 21x/3x-21 equation: 


x in (-oo:+oo)

((21*x)/3)*x-21 = 0

7*x^2 = 21 // : 7

x^2 = 3

x^2 = 3 // ^ 1/2

abs(x) = 3^(1/2)

x = 3^(1/2) or x = -3^(1/2)

x in { 3^(1/2), -3^(1/2) }

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