15 - 9 = 6 6÷3=2 X=2
You do the inverse operation
There are different levels of classification when it comes to numbers. The general classification is between real numbers and imaginary numbers. Imaginary numbers are those with 'i' in them which is equal to √-1. Next, real numbers can be classified as rational or irrational. Irrational numbers are those that can't be expressed into fractions. Lastly, rational numbers are classified into integers and fractions.
D∩E=D This is because since D is a subset of E then the elements they will have in common are the elements in D and D is not a null set
8 are left handed bc 20% of its 40 is 0.2×40 =8
