Subtract 49/10 from 63/42
1st number: 1 21/42, 2nd number: 4 9/10
63/42 - 49/10 is -17/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
49/10 = 49 × 21/10 × 21 = 1029/210 - Subtract the two like fractions:
315/210 - 1029/210 = 315 - 1029/210 = -714/210 - After reducing the fraction, the answer is -17/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42-98/10 63/84-49/10 63/42-49/20 63/42-49/30 63/42-49/50 63/42-49/70