operations on rational numbers

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

To add rational numbers, convert them to a common denominator, add the numerators, and simplify the result if necessary.

Subtracting a negative number is equivalent to adding its absolute value.

To multiply rational numbers, multiply the numerators together and the denominators together, then simplify the result.

The product of a negative number and a positive number is always negative.

The distance between two points on a number line is found by taking the absolute value of the difference between the two numbers.

Any number multiplied by zero equals zero.

A decrease in temperature can be represented by subtracting a positive number from the initial temperature.

Remaining quantity = Initial quantity - Sold quantity.

A product is negative if it is the result of multiplying an odd number of negative factors.