Subtract 2/70 from 42/21
1st number: 2 0/21, 2nd number: 2/70
42/21 - 2/70 is 69/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
42/21 = 42 × 10/21 × 10 = 420/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
2/70 = 2 × 3/70 × 3 = 6/210 - Subtract the two like fractions:
420/210 - 6/210 = 420 - 6/210 = 414/210 - After reducing the fraction, the answer is 69/35
- In mixed form: 134/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21-2/70 42/21-4/70 42/21-6/70 42/63-2/70 42/21-10/70 42/21-14/70