Question

rewrite 5/6 and 4/5 so that they have a common denominator.

Answer 1

Please try to understand what I said, I swear it will help you

Answer 2

ok whats the formula u use?

Answer 3

It is in the other post. Just a second.

Answer 4

multiply the 2 denominators, and then multiply the numerators by the same number you multiplied the denominator by

Answer 5

i just dont know what to multiply them by.

Answer 6

so 5/6 becomes 25/30, and 4/5 becomes 24/30. the denominator of 5 was multiplied by 6, and the numerator of that fraction was also multiplied by six. same on other side

Answer 7

why do u use six tho?

Answer 8

becasue it is the denominator of the other fraction. in the other fraction, you multiply by 5. its a number both 5 and 6 share, so a 'common denominator'

Answer 9

ok could u assist me with a couple more?

Answer 10

sure

Answer 11

rewrite 8/9 and 6/7 so that they have a common denominator.

Answer 12

so you need to multiply 9 by 7 on the left, and 7 by 9 on the right. that will be a number they have in commmon.

Answer 13

that will give oyu the denominators. to get the top, just multiply the numerator ont he left by 7, and the numerator on the right by 9

Answer 14

im so confused . im sorry i suck at math

Answer 15

just do what i had said. multiply numbers in the fraction on the right by the denominator(bottom number) of the fraction on the left. then multiply the numbers in the fraction on the left by the denominator of the fraction on the right. you will end up with two fraction that has a common number in the denominator

Answer 16

72/81 and 42/49

Answer 17

?

Answer 18

@DrTacoPhD

Answer 19

no, you're getting your left and right confused. multiply the numbers in the LEFT fraction by the denominator in the RIGHT fraction, and the opposite for the right fraction

Answer 20

56/63 and 54/63 @DrTacoPhD

Answer 21

there you go. same denominator, now you can add and subtract the numerators

Answer 22

damn your good lol. i get it now

Answer 23

np, gl