Subtract 3/40 from 54/30
1st number: 1 24/30, 2nd number: 3/40
54/30 - 3/40 is 69/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
54/30 = 54 × 4/30 × 4 = 216/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
3/40 = 3 × 3/40 × 3 = 9/120 - Subtract the two like fractions:
216/120 - 9/120 = 216 - 9/120 = 207/120 - After reducing the fraction, the answer is 69/40
- In mixed form: 129/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-6/40 54/60-3/40 54/30-3/80 54/30-9/40 54/90-3/40 54/30-15/40 54/30-21/40