Subtract 21/30 from 70/36
1st number: 1 34/36, 2nd number: 21/30
70/36 - 21/30 is 56/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 30 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
70/36 = 70 × 5/36 × 5 = 350/180 - Likewise, for the 2nd fraction, since 30 × 6 = 180,
21/30 = 21 × 6/30 × 6 = 126/180 - Subtract the two like fractions:
350/180 - 126/180 = 350 - 126/180 = 224/180 - After reducing the fraction, the answer is 56/45
- In mixed form: 111/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/36-42/30 70/72-21/30 70/36-21/60 70/36-63/30 70/36-21/90