Subtract 6/42 from 40/5
1st number: 8 0/5, 2nd number: 6/42
40/5 - 6/42 is 55/7.
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,
40/5 = 40 × 42/5 × 42 = 1680/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
6/42 = 6 × 5/42 × 5 = 30/210 - Subtract the two like fractions:
1680/210 - 30/210 = 1680 - 30/210 = 1650/210 - After reducing the fraction, the answer is 55/7
- In mixed form: 76/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5-6/42 40/5-12/42 40/10-6/42 40/5-6/84 40/5-18/42 40/15-6/42 40/5-30/42 40/25-6/42 40/35-6/42