Question

вычислите
7/20-3/20 5/9-1/3
1/3-8/27 3/4-4/7
1/5-3/20 1-1/3
1-1/5 1-5/13
решите плиз :3

Answer 1

7/20-3/20=1/5; 5/9-1/3=2/9; 1/3-8/27=1/27; 3/4-4/7=5/28