i used the answer key to get my answer and checked it with my dumb useless teacher and it’s right but, he won’t tell me how to g

Question

Sedbober [7]

3 years ago

11

i used the answer key to get my answer and checked it with my dumb useless teacher and it’s right but, he won’t tell me how to g

et the numerators like how does it go from 3 & 7 to 15 & 14 please help omg!!!!

Mathematics

1 answer:

gizmo_the_mogwai [7] · Answer 1 · 2022-02-18T18:29:33+03:00

You multiply it with the same number you use for the denominator.
in this case 3/4 and 7/10
you find the LCM of the denominator is 20
so for 4 to become 20 you multiply by 5 then for the numerator 3 also multiply by 5, so you get 15/20
its the same also with 7/10, you multiply both the numerator and the denominator by 2 and get 14/20
hope it help... :)