How would you group the following expression to make it easier to add?
18−(9 4/9) +(7/9)−8
(18 − 9 − 8)+(−49+79)
(18 − 8)−(949+79)
(18 − 8 − 9)
(8 − 18)+(49+79)
To make it easier to add, you can group the numbers of the expression as follows:
(18 - 9 - 8) + (-49 + 79)
To group the expression to make it easier to add, you can use parentheses to indicate which terms should be added together. Here's how you could group the expression step-by-step:
1. Start with the original expression: 18−(9 4/9) +(7/9)−8
2. Group the terms that you want to add together. One way to do this is by grouping the positive terms and the negative terms separately:
(18 − 9 − 8) + (−49 + 79)
3. Simplify each group separately:
(18 − 8 − 9) + (−49 + 79)
4. Further simplify each group:
(18 − 8 − 9) + (30)
5. Continue simplifying the expression:
(1) + (30)
6. Finally, add the terms together:
1 + 30 = 31
So, grouping the expression would make it easier to add, and the simplified result is 31.