Question

-4/5 - 5/6
A. -1/30
B. -49/30
C. -9/30

Answer 1

Write this as a common fraction over 5 x 6; i.e., over 30.

-4/5 = -6 x 4 /30 = -24/30
-5/6 = -5 x 5 /30 = -25/30

Hence -4/5 - 5/6 = .... what?

Answer 2

\[\frac{-4}{5} = \frac{-4}{5} \times \frac{6}{6} = \frac{-4 \times 6}{5 \times 6} = \frac{-24}{30}\]

Likewise -5/6 = -25/30

Hence
\[\frac{-4}{5} + \frac{-5}{6} = \frac{-24}{30} + \frac{-25}{30} = \frac{-24 - 25}{30} = .... what?\]

Answer 3

what step are you not following?

Answer 4

B. is correct

Answer 5

seriously jhonyy? You don't think it reasonable someone know how to add 24 and 25?