Решите: 3/25-0,12= , 1/7-0,1= , 0,6-7/20= , 1/10-1/11= решите

1) 3/25 - 0,12 = 0,12 - 0,12 = 0
2) 1/7 - 0,1 = 1/7 - 1/10 = 10/70 - 7/70 = 3/70
3) 0,6 - 7/20 = 0,6 - 0,35 = 0,25 = 1/4
4) 1/10 - 1/11 = 11/110 - 10/110 = 1/110

1) 3/25 = 3*4/25*4 = 12/100=0.12,   => 0.12-0.12=0
2) 1*10/7*10-1*7/10*7 = (10-7)/70 = 3/70
3) 0.6 = 6/10 = 12/20 => (12-7)/20=5/20 = 25/100 = 0,25
4) 1/10-1/11 = (11-10)/110 = 1/110