8 plus 15 = 23
12 + 15 + 63 + 12 + 24 + 34 + 23 + 15 = 198
Yes they are. Both give 38.
(-15) + 23 = 8
20 plus 15 percent = 23
37
The total sum is: 23+6+15 = 44
15 + 41 + 23 = 79
88
20x + 23
23 percent plus 15 percent is 38 percent. However, this only works if the percents are of the same thing.
15+b = 23 Subtract 15 from both sides b = 8