3x/7x=12

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Solution for 3x/7x=12 equation: 


x in (-oo:+oo)

((3*x)/7)*x = 12 // - 12

((3*x)/7)*x-12 = 0

3/7*x^2 = 12 // : 3/7

x^2 = 28

x^2 = 28 // ^ 1/2

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

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

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

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