Answer:
= 1 lb 11 oz
Step-by-step explanation:
recall that 1 lb = 16 oz
To make subtraction easier, we'll convert everything to oz.
17 lb 5 oz = (17lb)(16 oz/lb) + 5 oz = 277 oz
12 lb 10 oz = (12lb)(16 oz/lb) + 10 oz = 202 oz
the difference between the two
= 227 oz - 220 oz
= 27 oz
= 1 lb 11 oz