Subtract 35/45 from 54/21
1st number: 2 12/21, 2nd number: 35/45
54/21 - 35/45 is 113/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
54/21 = 54 × 15/21 × 15 = 810/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
35/45 = 35 × 7/45 × 7 = 245/315 - Subtract the two like fractions:
810/315 - 245/315 = 810 - 245/315 = 565/315 - After reducing the fraction, the answer is 113/63
- In mixed form: 150/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21-70/45 54/42-35/45 54/21-35/90 54/63-35/45