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

Question

18−949+79−8
(1 point)
Responses

a.(18 − 8 − 9)

b.(8 − 18)+(4/9+7/9)

c.(18 − 8)−(9 4/9+7/9)

d.(18 − 9 − 8)+(−4/9+7/9)

Answer 1

To make the expression \(18 - 949 + 79 - 8\) easier to add, we should group it in a way that allows us to simplify or perform the calculations step by step.

Looking at the options provided, option c. (18 − 8) − (9 4/9 + 7/9) seems to be a promising choice. Here’s why:

1. Grouping 18 and 8 together: Simplifying \(18 - 8\) makes it straightforward.
2. Recognizing that \(949\) can be expressed as \(9 + 4/9\): This allows you to manage the fractional part easier.

So, option c allows for simpler calculations.

Therefore, the best choice is: c.(18 − 8)−(9 4/9+7/9).