"A" denotes a new operation. Its meaning is: a B = (- a) · B - (a + b). Find (3 a 4) a 5

"A" denotes a new operation. Its meaning is: a B = (- a) · B - (a + b). Find (3 a 4) a 5

3◎4=-3*4-7=-19
-19◎5=19*5+14=109