-6 (minus six).
8
6
(4 x 7) + 5 = 33
If: -5 = 7+3r then the value of r works out as -4
7 + 5 + 4 + 5 + 3 + 4 + 6 + 5 + 4 + 5 + 6 + 4 + 7 = 65
41
-4 + 5 + (-7) = -6
The value of M from the equation 47n plus 57 would be 7. This is basic math.
-5+7--4+12 = 18
79
-7
5 + 1 + 4 + 22 + 7 = 39