Subtract 3/42 from 45/15
1st number: 3 0/15, 2nd number: 3/42
45/15 - 3/42 is 41/14.
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,
3/42 = 3 × 5/42 × 5 = 15/210 - Subtract the two like fractions:
630/210 - 15/210 = 630 - 15/210 = 615/210 - After reducing the fraction, the answer is 41/14
- In mixed form: 213/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-3/42 45/15-6/42 45/30-3/42 45/15-3/84 45/15-9/42 45/15-15/42 45/75-3/42 45/15-21/42