28=-2t+5t+7

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Solution for 28=-2t+5t+7 equation: 


t in (-oo:+oo)

28 = 5*t-2*t+7 // - 5*t-2*t+7

28-(-2*t)-(5*t)-7 = 0

2*t-5*t-7+28 = 0

21-3*t = 0 // - 21

-3*t = -21 // : -3

t = -21/(-3)

t = 7

t = 7

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