Subtract 27/7 from 32/40
1st number: 32/40, 2nd number: 3 6/7
32/40 - 27/7 is -107/35.
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,
32/40 = 32 × 7/40 × 7 = 224/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
27/7 = 27 × 40/7 × 40 = 1080/280 - Subtract the two like fractions:
224/280 - 1080/280 = 224 - 1080/280 = -856/280 - After reducing the fraction, the answer is -107/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/40-27/7 32/40-54/7 32/80-27/7 32/40-27/14 96/40-27/7 32/40-81/7 32/40-27/21 32/40-27/35 32/40-27/49