Subtract 70/42 from 10/5
1st number: 2 0/5, 2nd number: 1 28/42
10/5 - 70/42 is 1/3.
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,
10/5 = 10 × 42/5 × 42 = 420/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210 - Subtract the two like fractions:
420/210 - 350/210 = 420 - 350/210 = 70/210 - After reducing the fraction, the answer is 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/5-70/42 10/5-70/84 30/5-70/42 10/15-70/42 50/5-70/42 10/25-70/42 70/5-70/42 10/35-70/42