Question

ДАЮ 20 БАЛОВ!решите!!​

Answer 1

Ответ:

1) 0,6 + 1/15 = 6/10 + 1/15 = 15•6 + 10•1/150 = 90/150 = 9/15 = 3/5

2)1 2/3 • 2 4/5 = 5/3 • 14/5 = 1 • 14/3 • 1 = 14/3

3) 2,8 : 3/5 = 2 8/10 : 3/5 = 28/10 : 3/5 = 28•5/10•3= 140/30 = 14/3

4) 14/3 - 14/3 = 0