Subtract 27/42 from 72/10
1st number: 7 2/10, 2nd number: 27/42
72/10 - 27/42 is 459/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
72/10 = 72 × 21/10 × 21 = 1512/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
27/42 = 27 × 5/42 × 5 = 135/210 - Subtract the two like fractions:
1512/210 - 135/210 = 1512 - 135/210 = 1377/210 - After reducing the fraction, the answer is 459/70
- In mixed form: 639/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10-54/42 72/20-27/42 72/10-27/84 72/10-81/42 72/30-27/42 72/50-27/42 72/70-27/42