Вычислите 4•1/5+4•3/7-4•1/35

Question

Вычислите 4•1/5+4•3/7-4•1/35

Answer 1

0.8+12/7 - 4/35 = 4/5 + 12/7 - 4/35 = 28/35 + 60/35 - 4/35 = 84/35 = 2 14/35 = 2 2/5 = 2.4