So for this, you have to work backwards
And you need to reverse all the symbols(?) etc - becomes + and / becomes x
18+4-12+6=
18+4=22
22-12=10
10+6=16
16 is the answer
Pearson mode skewness, also called Pearson's first coefficient of skewness, is a way to figure out the skewness of a distribution. The mean, mode and median can be used to figure out if you have a positively or negatively skewed distribution. If the mean is greater than the mode, the distribution is positively skewed.
240 divided by 3 = 80. So 80!
It is commutative property