4/5 - 2/10 = 4/5 - 1/5 = 3/5
4/5 - 1/10...8/10 - 1/10 = 7/10
4/5 - 3/10 = 8/10 - 3/10 = 5/10 = 1/2
-5/10 + 8/10 = 3/10
4/10 or 2/5
9/10 − 4/5 = 1/10
It is: 4/5 minus 1/2 = 3/10
2/5 = 4/10 minus 1/10 is 3/10
4/5 - 2/10 = 4/5 - 1/5 = 3/5
9/10 - 4/5 = 9/10 - 8/10 = 1/10
4/5 - 1/10...8/10 - 1/10 = 7/10
4/10 - 1/5 = 2/5 - 1/5 = 1/5
4/5 - 3/10 = 8/10 - 3/10 = 5/10 = 1/2
9/10 minus 1/10 is 4/5
-5/10 + 8/10 = 3/10
4/10 or 2/5
(7-3)/10 = 4/10 = 2/5