Solve this math. 9+5=9 7+4=5 12+6=15 18+11=?

18+11=29

show the steps

To solve 18+11, you can follow these steps:

Step 1: Add the ones place digits together: 8+1 = 9
Step 2: Add the tens place digits together: 1+1 = 2
Step 3: Combine the sum of the tens place with the sum of the ones place: 20
Therefore, 18+11 = 29