-3t+9=30

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Solution for -3t+9=30 equation: 


t in (-oo:+oo)

9-3*t = 30 // - 30

9-3*t-30 = 0

-3*t-21 = 0 // + 21

-3*t = 21 // : -3

t = 21/(-3)

t = -7

t = -7

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