Subtract 2/42 from 45/15
1st number: 3 0/15, 2nd number: 2/42
45/15 - 2/42 is 62/21.
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,
45/15 = 45 × 14/15 × 14 = 630/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
2/42 = 2 × 5/42 × 5 = 10/210 - Subtract the two like fractions:
630/210 - 10/210 = 630 - 10/210 = 620/210 - After reducing the fraction, the answer is 62/21
- In mixed form: 220/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-2/42 45/15-4/42 45/30-2/42 45/15-2/84 45/15-6/42 45/15-10/42 45/75-2/42 45/15-14/42