Question

When comparing 7/18 to 1/2 using mental math, what fraction is useful?
A): 7/2
B): 7/14
C: 9/18
D): 18/36

Answer 1

what does it mean "useful"

Answer 2

im not really sure

Answer 3

Is there more to the question?

Answer 4

nope

Answer 5

oh i see

Answer 6

it is C since you have to have a fraction that has a 18 bottom and simplifies to 1/2

Answer 7

do you understand?

Answer 8

nahh not really

Answer 9

wait do i have to use LCD or the other one?

Answer 10

greastest common factor.

Answer 11

you have to compare the two and to do that you have to make the 1/2 to a fraction that has the same detonator as the 7/18

Answer 12

oh

Answer 13

You got it now?

Answer 14

yea kinda

Answer 15

But you are right with the LCD part

Answer 16

oh okay

Answer 17

Does that help you out?

Answer 18

yuup very much

Answer 19

Well got to go have a nice day

Answer 20

thanks ! :pp

Answer 21

Np

Answer 22

bye