Subtract 81/42 from 56/10
1st number: 5 6/10, 2nd number: 1 39/42
56/10 - 81/42 is 257/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
56/10 = 56 × 21/10 × 21 = 1176/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
81/42 = 81 × 5/42 × 5 = 405/210 - Subtract the two like fractions:
1176/210 - 405/210 = 1176 - 405/210 = 771/210 - After reducing the fraction, the answer is 257/70
- In mixed form: 347/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20-81/42 56/10-81/84 56/30-81/42 56/50-81/42 56/70-81/42