Verify .. a-(-b) = a+b
(a) a = 14 , b = 80
(b) a = 1 , b = 100
a - (-b) = a + b
(a) when a = 14 and b = 80
L.H.S. => 14 - ( - 80) = 94
R.H.S. => 14 + 80 = 94
(b) a = 1 and b = 100
L.H.S. => 1 - (-100) = 101
R.H.S. => 1 + 100 = 101
Since in both the cases L.H.S = R.H.S
So, a - ( - b ) = a + b is verified.
!!Hope it Helps!!