Explanation: a rational number can be represented as fractions and integers. Rational numbers can be expressed as p/q, where both of them are integers and q isn’t equal to zero.
Since m is the midpoint of ab, then the following relationship is fulfilled: Therefore, substituting values we have: From here, we clear the value of x. We have then: Then, the value of am, is given by substituting x in the expression: Substituting we have: Answer: the length of am is: