To convert any fraction to lowest terms, divide the common factors from the numerator and denominator.
Example
150/100 = (3*50)/(2*50) = (3/2)*(50/50) = (3/2)*1 = 3/2
Example
150/100 = (3*50)/(2*50) = (3/2)*(50/50) = (3/2)*1 = 3/2