Subtract 54/90 from 48/21
1st number: 2 6/21, 2nd number: 54/90
48/21 - 54/90 is 59/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
48/21 = 48 × 30/21 × 30 = 1440/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
54/90 = 54 × 7/90 × 7 = 378/630 - Subtract the two like fractions:
1440/630 - 378/630 = 1440 - 378/630 = 1062/630 - After reducing the fraction, the answer is 59/35
- In mixed form: 124/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/21-54/90 48/42-54/90 48/63-54/90