Find the lowest common denominator and solve. 3/7 - 4/21 1/21 1/7 0 5/21 I thank its C
@Five
what would be the first thing you would do? we already know a common denominator, what do you think that is?
u multiply the 2 two numbers
Correct, what would you multiply them by to get the common denominator?
yes
You would multiply the left side by 3 to get the common denominator. you don't have to multiply anything to the right side
ohhh
After you do that, what do you think comes next?
you subtract thn all
The choices are E and F
Correct hiiii after that you simplify the fraction that you got if it isn't in simplest form
okay
What do you think the answer is?
C
Incorrect.
ohh woops i mean B
I think it's D... the fraction you get is already in simplest form
okkkk
3*3/7*3-4/21 9/21-4/21 9-4/21 5/21
5 and 21 are not factors of each other, so it's already in simplest form
ooohhhhh
ty
You're welcome :)
Np.
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