Absolute value is the magnitude of quantity, irrespective of sign; the distance of a quantity from zero. The absolute value of a number is symbolized by two vertical lines, as |8| or |-8| is equal to 8.
This is the commutative property (of addition, but this applies to multiplication as well)It doesn't matter which order the numbers are added in, the same result will be achieved.1+2 = 2+12*4 = 4*2