2-1/14-1/28+2 решите

Question

2-1/14-1/28+2 решите

Answer 1

2-1/14-1/28+2=3 25/28     
  1      2     3
1)2-1/14=1 14/14-1/14=1 13/14
2)1 13²/14-1/28=1 26/28-1/28=1 25/28
3)1 25/28+2=3 25/28