119. 8 plus 8 plus 8 plus 5 is 29 so you put the nine in the ones spot and you add the two with the 2,3,3 and 1. That equals 11 so you put the 11 in the tens spot.
111111111199999 119
24-18=6 35-7=28 28+6=34 so 34 is the answer
34 plus 1 equals 35
140
few errors in your title: 2 plus 4 = 6 6 plus 9 = 15 10 plus 25 = 35 18 + 81 = 99
35 + 28 = 63
3,457 plus 35 equals 3,492.
31 plus four is 35.
35 + 18 = 53
18/35 ÷ 17/28 = 72/85
-35 -148 + 18 = -165
17+18=35 done
15 + 35 = 50