7 1/2 / (4 1/2 - 5 1/8) =

Answer:
-12
Step-by-step explanation:
15/2 ÷ (9/2 - 41/8)
= 15/2 ÷ (36/8 - 41/8)
= 15/2 ÷ (-5/8)
= 15/2 × (-8/5)
= -120/10 or -12