The answer 45 and the other one to the question is invalid
10=2×5 and 14=2×7 so least common denominator will be 2×5×7=70
9/10=63/70
3/14=15/70
So 63/70-15/70=48/70=24/35
Answer:
11 lots are for sale.
Step-by-step explanation:
This is as simple as:

Since Mr. Smith divided the land into 1/2 acre lots, you'd just divide it by the amount he has.
50,000 would be 50 ten thousands