Subtract 32/70 from 7/28
7/28 - 32/70 is -29/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
7/28 = 7 × 5/28 × 5 = 35/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
32/70 = 32 × 2/70 × 2 = 64/140 - Subtract the two like fractions:
35/140 - 64/140 = 35 - 64/140 = -29/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-32/70 7/28-64/70 7/56-32/70 21/28-32/70 7/28-96/70 7/84-32/70 35/28-32/70 49/28-32/70