Question

1. Add the following rational numbers:
-7/27,5/18​

Answer 1

Take lcm of the denominator

U will get 72

-20/72 +21/72=1/72

Step-by-step explanation:

Answer 2

Answer ⤵

Step ↔1 . Find HCF of denominator.

= -7 / 27 + 5 /18

= - 14 + 15 / 54 ( HCF of 27 and 18 is 54)

= 1 / 54 ↔Answer