Answer:
98
Step-by-step explanation:
71 + 9 + 18 = ( 71 + 9 ) + 18 Group numbers that add to 10 to make it easier
= 80 + 18
= 98
If you have any questions, you can ask them in the comments section of this answer. If you could mark this answer as brainliest, I would greatly appreciate it.
