5t/4-5t/14t=2/7

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Solution for 5t/4-5t/14t=2/7 equation: 


t in (-oo:+oo)

(5*t)/4-(((5*t)/14)*t) = 2/7 // - 2/7

(5*t)/4-(((5*t)/14)*t)-(2/7) = 0

(-5/14)*t^2+(5*t)/4-2/7 = 0

5/4*t-5/14*t^2-2/7 = 0

DELTA = (5/4)^2-(-5/14*(-2/7)*4)

DELTA = 905/784

DELTA > 0

t = ((905/784)^(1/2)-5/4)/(-5/14*2) or t = (-(905/784)^(1/2)-5/4)/(-5/14*2)

t = -7/5*((905/784)^(1/2)-5/4) or t = 7/5*((905/784)^(1/2)+5/4)

t in { -7/5*((905/784)^(1/2)-5/4), 7/5*((905/784)^(1/2)+5/4) }

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