1 + 30 + 2 + 3 + 5 + 6 + 10 + 15 = 72
30 + 42 = 72
72+30=102
90+x+72+30 = 180. If you add 90+72+30, you get 192. But to get 180 you have to subtract 12. 90+(-12)+72+30 =180 if x is -12
30 + 25 + 15 + 25 = 95
1 + 30 + 2 + 3 + 5 + 6 + 10 + 15 = 72
30 + 42 = 72
72+30=102
72 + 15 % = 82.8
20 + 12 + 32 + 20 + 30 + 72 = 186
90+x+72+30 = 180. If you add 90+72+30, you get 192. But to get 180 you have to subtract 12. 90+(-12)+72+30 =180 if x is -12
2+40+30=72
It is 72.
30 + 25 + 15 + 25 = 95
-15
15 + 30 = 45
Yes, 15 + 15 = 30