Question

Find the lowest common denominator and solve.
3/7 - 4/21

1/21
1/7
0
5/21

I thank its C

Answer 1

@Five

Answer 2

what would be the first thing you would do? we already know a common denominator, what do you think that is?

Answer 3

u multiply the 2 two numbers

Answer 4

Correct, what would you multiply them by to get the common denominator?

Answer 5

yes

Answer 6

You would multiply the left side by 3 to get the common denominator. you don't have to multiply anything to the right side

Answer 7

ohhh

Answer 8

After you do that, what do you think comes next?

Answer 9

you subtract thn all

Answer 10

The choices are E and F

Answer 11

Correct hiiii

after that you simplify the fraction that you got if it isn't in simplest form

Answer 12

okay

Answer 13

What do you think the answer is?

Answer 14

C

Answer 15

Incorrect.

Answer 16

ohh woops i mean B

Answer 17

I think it's D... the fraction you get is already in simplest form

Answer 18

okkkk

Answer 19

3*3/7*3-4/21

9/21-4/21

9-4/21

5/21

Answer 20

5 and 21 are not factors of each other, so it's already in simplest form

Answer 21

ooohhhhh

Answer 22

ty

Answer 23

You're welcome :)

Answer 24

Np.