Subtract 40/70 from 60/42
1st number: 1 18/42, 2nd number: 40/70
60/42 - 40/70 is 6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
60/42 = 60 × 5/42 × 5 = 300/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
40/70 = 40 × 3/70 × 3 = 120/210 - Subtract the two like fractions:
300/210 - 120/210 = 300 - 120/210 = 180/210 - After reducing the fraction, the answer is 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42-80/70 60/84-40/70