Subtract 21/60 from 70/30
1st number: 2 10/30, 2nd number: 21/60
70/30 - 21/60 is 119/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
70/30 = 70 × 2/30 × 2 = 140/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Subtract the two like fractions:
140/60 - 21/60 = 140 - 21/60 = 119/60 - In mixed form: 159/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30-42/60 70/60-21/60 70/30-63/60 70/90-21/60