7t-1/2-5t=-21/2

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Solution for 7t-1/2-5t=-21/2 equation: 


t in (-oo:+oo)

7*t-(5*t)-(1/2) = -21/2 // + -21/2

7*t-(5*t)-(1/2)-(-21/2) = 0

7*t-5*t-1/2+21/2 = 0

2*t+10 = 0 // - 10

2*t = -10 // : 2

t = -10/2

t = -5

t = -5

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