Subtract 1/7 from 72/40
1st number: 1 32/40, 2nd number: 1/7
72/40 - 1/7 is 58/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
72/40 = 72 × 7/40 × 7 = 504/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
1/7 = 1 × 40/7 × 40 = 40/280 - Subtract the two like fractions:
504/280 - 40/280 = 504 - 40/280 = 464/280 - After reducing the fraction, the answer is 58/35
- In mixed form: 123/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40-2/7 72/80-1/7 72/40-1/14 72/40-3/7 72/40-1/21 72/40-5/7 72/40-1/35 72/40-1/49