14/20 minus 3/5 is 1/10
14
-77/14 - 24/14 = -101/14
It can't be solved because the discriminant of this quadratic equation is less than zero
28
72/126 - 49/126 = 23/126
14/20 - 3/5 = 14/20 - 12/20 = 2/20 = 1/10
-14
14
-24
4/1 - 27/11 = 15/11 or 14/11
28+14 = 42 42-14= 28