Subtract 42/9 from 48/7
1st number: 6 6/7, 2nd number: 4 6/9
48/7 - 42/9 is 46/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
48/7 = 48 × 9/7 × 9 = 432/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
42/9 = 42 × 7/9 × 7 = 294/63 - Subtract the two like fractions:
432/63 - 294/63 = 432 - 294/63 = 138/63 - After reducing the fraction, the answer is 46/21
- In mixed form: 24/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/7-42/9 48/7-84/9 48/14-42/9 48/7-42/18 48/21-42/9 48/7-42/27 48/35-42/9 48/7-42/45 48/49-42/9 48/7-42/63