Question:

5/6 + 4/9

a. 1/2

b. 9/18

c. 1 5/18

d. 1 1/2

5/6 + 4/9

LCD = least common denominator = 18

5 * 3/6 * 3 = 15/18
4 * 2/9 * 2 = 8/18

15/18 + 8/18
15 + 8/18

23/18 that converts to:

1 5/18

hope this was helpful!

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.