Subtract 18/56 from 40/30
1st number: 1 10/30, 2nd number: 18/56
40/30 - 18/56 is 85/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
40/30 = 40 × 28/30 × 28 = 1120/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
18/56 = 18 × 15/56 × 15 = 270/840 - Subtract the two like fractions:
1120/840 - 270/840 = 1120 - 270/840 = 850/840 - After reducing the fraction, the answer is 85/84
- In mixed form: 11/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-18/56 40/30-36/56 40/60-18/56 40/30-54/56 40/90-18/56 40/30-90/56