Question

Выполните действия (5/6-2/5)+3/20
1/8+(5/9-1/4)
5/6-(3/10+2/5)
(3/4+1/8)-5/8

Answer 1

1. 25/30-12/30+3/20=13/30+3/20=26/60+9/60=
35/60=7/12
2. 1/8+20/36-9/36=1/8+11/36=9/72+22/72=31/72
3. 5/6-3/10+4/10=5/6-7/10= 25/30-21/30=4/30=2/15
4. 6/8 +1/8-5/8=2/8=1/4