Jordan is making a beaded necklace two thirds of the beads she uses are red and 4/21 of the beads are blue she wants the rest to be white what fraction of the beads should be white

2/3 = 14/21 ... red beads ... 4/21 blue beads ... 14+4 = 18/21 ... so you need 3/21 more to finish the necklace and 3/21=1/7 in white beads

2/3 - Red

4/21 - Blue

Change the red fraction so both fractions will have the same denominator

2/3 change to 14/21

Add blue and red together

14/21 + 4/21 = 18/21

Then subtract it from the total to get the white beads

21/21 - 18/21 = 3/21

Simplify it to get 1/7

Ans : 1/7