Question

Решите пример с дробями. А)5/21-3/14
Б)2/15+(1/15+1/3)
В)1/20+2/15+3/20+1/15

Answer 1

Б. 2/15+(1/15+1/3)=2/5 В.1/20+2/15+3/20+1/15=8/15

Answer 2

5/21- 3/14= 10/42-9/42=1/42
2/15+(1/15+1/3)= 2/15+(1/15+5/15)=2/15+6/15=8/15
1/20+2/15+3/20+1/15= 3/60+8/60+9/60+4/60=24/60=3/10