Subtract 72/10 from 42/6
1st number: 7 0/6, 2nd number: 7 2/10
42/6 - 72/10 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
42/6 = 42 × 5/6 × 5 = 210/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
72/10 = 72 × 3/10 × 3 = 216/30 - Subtract the two like fractions:
210/30 - 216/30 = 210 - 216/30 = -6/30 - After reducing the fraction, the answer is -1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6-72/10 42/12-72/10 42/6-72/20 42/18-72/10 42/6-72/30 42/30-72/10 42/6-72/50 42/6-72/70