Ответ:
(t- 7t/t+2) : t-5/ t+2= t(t+2)-7t/ t+2 • t+2/ t-5= (t^2+ 2t- 7t) • 1/ t-5= (t^2- 5t) • 1/t-5= t(t-5) • 1/ t-5( сокращаем на t-5) = x
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Ответ:
(t- 7t/t+2) : t-5/ t+2= t(t+2)-7t/ t+2 • t+2/ t-5= (t^2+ 2t- 7t) • 1/ t-5= (t^2- 5t) • 1/t-5= t(t-5) • 1/ t-5( сокращаем на t-5) = x