Step-by-step explanation:
100 / 2 (1500/5 (6 + (21 + 7 - 24)))
= 100 / 2 (1500/5 (6 + (28 - 24)))
= 100 / 2 (1500/5 (6 + (4)))
= 100 / 2 (1500/5 (10))
= 100 / 2 (300 (10))
= 100 / 2 (3000)
= 50 (3000)
= 150000
Rule: BODMAS (Brackets first so if there's bracket in bracket solve the bracket in the brackets first)
if left + - x /, solve x and / first from left to right then when there's + - left solve everything from left to right
If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!
