-4
It is: 12 minus 8 = 4
(12 * 8) - (12 + 8) = 96 - 20 = 76
12+8+10+12+11+9 = 62
For plus we addFor minus we subetractEX:4+4=8:4-4=0
40
The range of that set of numbers (the difference between the highest and lowest number) is 11.
It is: 12 minus 8 = 4
(12 * 8) - (12 + 8) = 96 - 20 = 76
They both equal to 12 if u make equation
13 hours
12+8+10+12+11+9 = 62
For plus we addFor minus we subetractEX:4+4=8:4-4=0
They both equal to 12 if u make equation
40
12 - 8 + 3 + 5 = 12
8 + 12 = 20
-8 + 12 = 4