What is 90/20 - 83/81
In order to make fractions have the same denominator, multiply the numerator and denominator of each fraction by the denominator of the other
|(90 x 81) - (83 x 20)|
|20 x 81|
Simplify the fraction
Divide each part of the fraction with the greatest common factor to simplify the fraction
Because the numerator greater than the denominator, so we have an improper fraction, which means we can simplify it by converting the improper fraction to a mixed number.
Improper fraction to mixed number, get the whole number by dividing the numerator with the denominator, then subtract the numerator by the whole number multiplied by the denominator.