what does (t-13)+(t-6)+99=180
You are Form 2? I am Form 3! :D
(t-13) + (t-6) + 99 = 180
(t - 13) + (t - 6) = 180 - 99 = 81
t - 13 + t - 6 = 81
2t - 19 = 81
2t = 81 + 19 = 110
t = 110/2 = 55 <- final answer.
