The sum of 7/10 and 1/5 is 9/10
1 and 9/14, 12/7, 11/6
10/12 - 1/4 = 10/12 - 3/12 = 7/12 So the simplest form is 7/12 because 7 is a prime number (has no factors except 1 and itself)
2/5 plus 1/15 equals 6/15+1/15 equals 7/15.
That can be factored into (7d + 1)(d + 7)
7/12 + 1/3 = 11/12
1/12 + 7/9 is 31/36
7 over 12
7/12 + 8/12 = 15/12 = 1 and 3/12 = 1 and 1/4
1 17/60
-7/12 + 10/12 = 3/12 = 1/4
0 7/12
The answer is 9 over 12 or 3 over 4
5/6
1/3 + 1/4 = 4/12 + 3/12 = 7/12
19/12 or 1 and 7/12
1/8 + 7/12 = 3/24 + 14/24 = 17/24.