524.
Chat with our AI personalities
3/4 minus 1/10 is 13/20
(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.
It is: 3/4-1/10 = 13/20
4/5 - 3/10 = 8/10 - 3/10 = 5/10 = 1/2
13/10 - 5/10 = 8/10 or 4/5