Subtract 63/42 from 7/5
1st number: 1 2/5, 2nd number: 1 21/42
7/5 - 63/42 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
7/5 = 7 × 42/5 × 42 = 294/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210 - Subtract the two like fractions:
294/210 - 315/210 = 294 - 315/210 = -21/210 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/5-63/42 7/10-63/42 7/5-63/84 21/5-63/42 7/15-63/42 35/5-63/42 7/25-63/42 49/5-63/42 7/35-63/42