139=5t+7t+7

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Solution for 139=5t+7t+7 equation: 


t in (-oo:+oo)

139 = 5*t+7*t+7 // - 5*t+7*t+7

139-(5*t)-(7*t)-7 = 0

139-5*t-7*t-7 = 0

132-12*t = 0 // - 132

-12*t = -132 // : -12

t = -132/(-12)

t = 11

t = 11

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