How would you group the following expression to make it easier to add?

Question

18−(9 4/9) +(7/9)−8

(18 − 9 − 8)+(−49+79)

(18 − 8)−(949+79)

(18 − 8 − 9)

(8 − 18)+(49+79)

Answer 1

To make it easier to add, you can group the numbers of the expression as follows:

(18 - 9 - 8) + (-49 + 79)