-15
No.
1/3 is greater than 5/18
3 over 18 is slightly greater than 1 over 10. 1 over 10 = 0.1 and 3 over 18 = 0.167
There are 3 feet in a yard, so 3 x 7 is 21. There are 21 feet in 3 yards, so 7 yards is greater than 18 feet.
18 inches is 1.5 feet, so 3 feet is longer.
3/4 of 20 is greater than 1/3 of 18 because 15 is greater than 6
-15
18
4(5)is greater because it is 20.20 is greater than 18.
The greatest common factor of 18 and 21 is 3.
It's greater.
18 is greater as it is a whole number.