Subtract 16/15 from 70/42
1st number: 1 28/42, 2nd number: 1 1/15
70/42 - 16/15 is 3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 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 15 × 14 = 210,
16/15 = 16 × 14/15 × 14 = 224/210 - Subtract the two like fractions:
350/210 - 224/210 = 350 - 224/210 = 126/210 - After reducing the fraction, the answer is 3/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-32/15 70/84-16/15 70/42-16/30 70/42-48/15 70/42-16/45 70/42-80/15 70/42-16/75