81 - 50 = 31 50 - 19 = 31
-31 (5*(-7))-(-4) (-35)+4 -31
43
Then A = 31, b = 31 and c = 31/15 = 2.066...
-6
49
81 - 50 = 31 50 - 19 = 31
31
31.
It is 31.
-31 (5*(-7))-(-4) (-35)+4 -31
9 subtracted from 40 = -31
15.5 x 2 = 31
6
43
16 31-15=16 15-31=-16
it is a prime number