Subtract 45/42 from 7/5
1st number: 1 2/5, 2nd number: 1 3/42
7/5 - 45/42 is 23/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
7/5 = 7 × 42/5 × 42 = 294/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
45/42 = 45 × 5/42 × 5 = 225/210 - Subtract the two like fractions:
294/210 - 225/210 = 294 - 225/210 = 69/210 - After reducing the fraction, the answer is 23/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/5-45/42 7/5-90/42 7/10-45/42 7/5-45/84 21/5-45/42 7/15-45/42 35/5-45/42 7/25-45/42 49/5-45/42 7/35-45/42