Question

30-23,1÷(5 7/20-4 6/35 подробно по действиям​

Answer 1

Ответ:

1) 5 7/20 - 4 6/35 = 107/20 - 146/35=7×107/140 -4×146/140=749/140 -584/140=165/140=33/28

2) 23,1÷33/28=231/10÷33/28=231×28/10×33=7×14/5×1=98/5

3) 30 - 98/5 = 150/5 - 98/5 =52/5=10 2/5 = 10,4