Subtract 90/4 from 9/90
1st number: 9/90, 2nd number: 22 2/4
9/90 - 90/4 is -112/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
9/90 = 9 × 2/90 × 2 = 18/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
90/4 = 90 × 45/4 × 45 = 4050/180 - Subtract the two like fractions:
18/180 - 4050/180 = 18 - 4050/180 = -4032/180 - After reducing the fraction, the answer is -112/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90-90/4 9/90-90/8 27/90-90/4 9/90-90/12 45/90-90/4 9/90-90/20 63/90-90/4 9/90-90/28