3/24 in lowest terms
4/6 in lowest terms
8/18 in lowest terms
9/15 in lowest terms
7/21 in lowest terms
10/12 in lowest terms
4/8 in lowest terms
10/16 in lowest terms
15/20 in lowest terms
3/30 in lowest terms

3/4 =3/4

4/6= 2/3

8/18= 4/9

9/15=3/5

7/21= 1/3

10/12= 5/6

4/8= 1/2

10/16=5/8

15/20= 3/4

3/30=1/10

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or