-3t+6+6t=21

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Solution for -3t+6+6t=21 equation: 


t in (-oo:+oo)

6*t-3*t+6 = 21 // - 21

6*t-3*t-21+6 = 0

3*t-15 = 0 // + 15

3*t = 15 // : 3

t = 15/3

t = 5

t = 5

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