Verified answer

5/6-(3/10+2/5)=5/6-(3/10+4/10)=5/6-7/10=50/60-42/60=8/60=2/15

(3/4+1/8)-5/8 = (6/8+1/8)-5/8=7/8-5/8=2/8=1/4

5/6-(3/10+2/5)

1) 0.3+0.4=0.7

2) 5/6=0.83

3)0.83-0.7=0.13

Ответ:0.13

(3/4+1/8)-5/8 = (6/8+1/8)-5/8=7/8-5/8=2/8=1/4

1)3/4=0.75

2)1/8=0.125

3)0.75+0.125=0.825

4)5/8=0.625

5)0.825-0.625=0.2

Ответ:0.2