Subtract 4/45 from 90/28
1st number: 3 6/28, 2nd number: 4/45
90/28 - 4/45 is 1969/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
90/28 = 90 × 45/28 × 45 = 4050/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
4/45 = 4 × 28/45 × 28 = 112/1260 - Subtract the two like fractions:
4050/1260 - 112/1260 = 4050 - 112/1260 = 3938/1260 - After reducing the fraction, the answer is 1969/630
- In mixed form: 379/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-8/45 90/56-4/45 90/28-4/90 90/28-12/45 90/84-4/45 90/28-20/45 90/28-28/45