Subtract 30/42 from 35/15
1st number: 2 5/15, 2nd number: 30/42
35/15 - 30/42 is 34/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
35/15 = 35 × 14/15 × 14 = 490/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
30/42 = 30 × 5/42 × 5 = 150/210 - Subtract the two like fractions:
490/210 - 150/210 = 490 - 150/210 = 340/210 - After reducing the fraction, the answer is 34/21
- In mixed form: 113/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15-30/42 35/15-60/42 35/30-30/42 35/15-30/84 35/15-90/42 35/45-30/42 35/75-30/42