Subtract 15/42 from 72/6
1st number: 12 0/6, 2nd number: 15/42
72/6 - 15/42 is 163/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
72/6 = 72 × 7/6 × 7 = 504/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
15/42 = 15 × 1/42 × 1 = 15/42 - Subtract the two like fractions:
504/42 - 15/42 = 504 - 15/42 = 489/42 - After reducing the fraction, the answer is 163/14
- In mixed form: 119/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/6-30/42 72/12-15/42 72/6-15/84 72/6-45/42 72/18-15/42 72/6-75/42 72/30-15/42 72/42-15/42