5,3+2,2+10,7

5+3 = 8

2+2 = 4
2+10 = 12
7 = 7

To add these numbers step-by-step:

Step 1: Add 5 and 3.
5 + 3 = 8

Step 2: Add 2 to the previous result.
8 + 2 = 10

Step 3: Add 2 and 10.
2 + 10 = 12

Step 4: Add 12 to 7.
12 + 7 = 19

Therefore, the final result is 19.