53-24:6

To solve the expression \(53 - 24:6\), we need to follow the order of operations (also known as PEMDAS/BODMAS):

1. Division first: \(24 \div 6 = 4\)
2. Then, subtraction: \(53 - 4 = 49\)

So, \(53 - 24:6 = 49\).