Megan ate 3/4 of a cookie. wrote and equivalent fraction for the amount of cookie Megan didn't eat

1 cookie=number/number where number stays constant so

1 cookie=1/1,2/2,3/3,4/4,5/5, etc

so if 3/4 of cookie eaten

the bottom number tells how many in the whole or 1 so

whole=4/4

4/4-3/4=1/4

1/4=not eaten

equivilent, multiply top and bottom number by same number

1/4 times 2/2=2/8

1/4 times 4/4=4/16

4/4 - 3/4 = 1/4

2/8 is equal to 1/4

and 3/12

and 4/16