It is: 1/2 minus 2/5 = 1/10
2/5 = 4/10 minus 1/10 is 3/10
It is 21/10 minus 1/10 = 20/10 or 2
1 − 5/2 = -11/2
5 and 8/10 minus 3 and 1/2 = 2 and 3/10
10/12 minus 2/4 is 1/3
(10+9)+(1−1)+(2−2)+(3−1)+(4−4) = 21This is the same equation rewritten: (10+9)+(3−1) = 21This can be done as 1-1, 2-2, 4-4 cancel themselves out.
3/10 1/5 You would change that to common denominator.. 3/10 2/10 Then 3 minus 2 is 1 so the answer it... 1/10
3/2 minus 1/5 = 1 3/10
1/10 - 1/2 = 1/10 - 5/10 = -4/10 = -2/5
9/10 minus 3 is -2 1/10
1/5 - 1/10 = 2/10 - 1/10 = (2 - 1)/10 = 1/10