Question

If a whole number is subtracted from 10 as well as added to 10, then the sum of the resulting numbers
is
(1) 0
(2) 20
(3) 40
(4) 80​

Answer 1

Answer:

(10+x) + (10-x)

10+x+10-x

20 ( x is cancelled)

so the answer is 20.

Answer 2

Answer:

the product of two odd numbers is