Respuesta :

Step-by-step explanation:

100/2[500/5{6+(21-17)}]

using BODMAS

100/2[500/5{6+4}]

100/2[500/5 × 10]

100/2 [100 × 10]

100/2 × 1000

50× 1000

50000

I think this is the answer. I'm not really sure but this is how I studied

All the best!