Subtract 24/70 from 42/20
1st number: 2 2/20, 2nd number: 24/70
42/20 - 24/70 is 123/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
42/20 = 42 × 7/20 × 7 = 294/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
24/70 = 24 × 2/70 × 2 = 48/140 - Subtract the two like fractions:
294/140 - 48/140 = 294 - 48/140 = 246/140 - After reducing the fraction, the answer is 123/70
- In mixed form: 153/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-24/70 42/20-48/70 42/40-24/70 42/20-72/70 42/60-24/70