20 + 10 - 31 + 30 - 5 = 24
-30 minus -6 is -24
30 + 12 = 42, 12 + 12 = 24, I am not completely sure on the answer as the two subtractions can be taken in either order, either resulting in: 42 - 24 + 18, 18 - 12 = 6, or 24 - 12 = 12, 42 - 12 = 30.
10x3+8=80-60+? 30+8=20+? 38=20+? 38-20=? 18=? The answer is 18.
24 + 30 = 54
24 + 14 - 8 = ? According to BODMAS, 24 + 14 should be added first and then should be subtracted by 8. Thus, 24 + 14 = 38 38 - 8 = 30 The correct answer is 30.
9 + 2 + 30 - 5 + 18 - 19 = -1
20 + 10 - 31 + 30 - 5 = 24
-30 - (-24) = -30 + 24 = -6
76 - 90 = -18 -18 - -48 = 30.
-18
-30 minus -6 is -24
6:30pm = 18:30 on 24-hour clock then 18:30 minus 08:30 = 10:00 Answer: ten hours
3+6+9+12+15+18+21+24+27+30+33+36 = 234
-24
30
30 + 12 = 42, 12 + 12 = 24, I am not completely sure on the answer as the two subtractions can be taken in either order, either resulting in: 42 - 24 + 18, 18 - 12 = 6, or 24 - 12 = 12, 42 - 12 = 30.