60
18 + 42 = 60
42 + 24 + 18 = 84
64 plus 18 plus 42 plus 48 plus 37 = 209
5 + 42 - 8 + 92 + 2 + 4 + 18 - 514 = -359
60
105.
11/42 + 5/18 = 34/63
18+24+16+22 42+38 =80
No, 2 + 2 = 42 + 16 = 18
3/7 + 1/6 = 18/42 + 7/42 = 25/42
13 + 16 + 18 + 20 + 21 + 26 + 27 + 27 + 28 + 36 + 39 + 42 + 43 = 356
18/35 + 13/42 = 1211/1470 or 173/210