Subtract 42/30 from 70/15
1st number: 4 10/15, 2nd number: 1 12/30
70/15 - 42/30 is 49/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
70/15 = 70 × 2/15 × 2 = 140/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Subtract the two like fractions:
140/30 - 42/30 = 140 - 42/30 = 98/30 - After reducing the fraction, the answer is 49/15
- In mixed form: 34/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15-84/30 70/30-42/30 70/15-42/60 70/45-42/30 70/15-42/90 70/75-42/30