N = 3
44.
5 + (6 x3)^2 / 3 x (2 + 1)
5 + (18)^2 / 3 x (3)
5 + (324) / 9
329 / 9
36.55...
45.
(20 x 3) - 3^2
60 - 9
51
(There might be a chance that the answer is N/A... I forget what can’t be negative in an exponent.)
46.
(-5 x3) + (3 x 3) - (7 x 3)
-15 + 9 - 21
-27