Lowest form of a rational number

The standard form of rational number –1 is ______.

In the standard form of a rational number, the denominator is always a

Express the numbers 0.bar(3178) in the form of rational numbers a/b.

Reduce each of the following rational numbers in its lowest form: (-60)/( 72)

Reduce each of the following rational numbers in its lowest form: (91)/(-364)

Find whether the following rational numbers are in the lowest form or not. (i) (17)/(79) (ii) (24)/(320)

Express each of the following rational numbers to the lowest form. (i) (12)/(16) (ii) (-60)/(72)

Express each of the following rational numbers to the lowest form. (i) (-24)/(-36) (ii) (91)/(-364)

Determine whether the following rational numbers are in the lowest form or not: (i) (65)/(84) (ii) (-15)/(32)