Subtract 10/84 from 7/20
7/20 - 10/84 is 97/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
7/20 = 7 × 21/20 × 21 = 147/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
10/84 = 10 × 5/84 × 5 = 50/420 - Subtract the two like fractions:
147/420 - 50/420 = 147 - 50/420 = 97/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-10/84 7/20-20/84 7/40-10/84 21/20-10/84 7/20-30/84 7/60-10/84 35/20-10/84 7/20-50/84 49/20-10/84 7/20-70/84