Halp pls big reward for 100 coins pls plus and 5.0 rating pls HALP

for 21 and 23 use LCM method and make the denominators equal

for 22

1/2, 2/4, 3/6 are fractions taht u can write

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.