Subtract 49/42 from 20/10
1st number: 2 0/10, 2nd number: 1 7/42
20/10 - 49/42 is 5/6.
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,
20/10 = 20 × 21/10 × 21 = 420/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
49/42 = 49 × 5/42 × 5 = 245/210 - Subtract the two like fractions:
420/210 - 245/210 = 420 - 245/210 = 175/210 - After reducing the fraction, the answer is 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10-49/42 20/10-98/42 20/10-49/84 60/10-49/42 20/30-49/42 20/50-49/42 20/70-49/42