Subtract 2/5 from 70/42
1st number: 1 28/42, 2nd number: 2/5
70/42 - 2/5 is 19/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
2/5 = 2 × 42/5 × 42 = 84/210 - Subtract the two like fractions:
350/210 - 84/210 = 350 - 84/210 = 266/210 - After reducing the fraction, the answer is 19/15
- In mixed form: 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-4/5 70/84-2/5 70/42-2/10 70/42-6/5 70/42-2/15 70/42-10/5 70/42-2/25 70/42-14/5 70/42-2/35