Question

Вычислите 2 5/8(5/7-3/5)-9:2 1/4​

Answer 1

2 5/8×(5/7-3/5)-9:2 1/4=-3 7/10

5/7-3/5=(5*5-3*7)/35=4/35

2 5/8*4/35=21/8*4/35=3/10

8:2 1/4=9:9/4=4

3/10-4=3/10-3 10/10=-3 7/10