Subtract 60/70 from 21/24
21/24 - 60/70 is 1/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
21/24 = 21 × 35/24 × 35 = 735/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
60/70 = 60 × 12/70 × 12 = 720/840 - Subtract the two like fractions:
735/840 - 720/840 = 735 - 720/840 = 15/840 - After reducing the fraction, the answer is 1/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-60/70 21/48-60/70 63/24-60/70 21/72-60/70