Subtract 3/42 from 8/5
1st number: 1 3/5, 2nd number: 3/42
8/5 - 3/42 is 107/70.
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,
8/5 = 8 × 42/5 × 42 = 336/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Subtract the two like fractions:
336/210 - 15/210 = 336 - 15/210 = 321/210 - After reducing the fraction, the answer is 107/70
- In mixed form: 137/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/5-3/42 8/5-6/42 8/10-3/42 8/5-3/84 24/5-3/42 8/5-9/42 8/15-3/42 40/5-3/42 8/5-15/42 8/25-3/42 56/5-3/42 8/5-21/42 8/35-3/42