9+t+t=15

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Solution for 9+t+t=15 equation: 


t in (-oo:+oo)

t+t+9 = 15 // - 15

t+t-15+9 = 0

2*t-6 = 0 // + 6

2*t = 6 // : 2

t = 6/2

t = 3

t = 3

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