Subtract 48/9 from 30/7
1st number: 4 2/7, 2nd number: 5 3/9
30/7 - 48/9 is -22/21.
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,
30/7 = 30 × 9/7 × 9 = 270/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
48/9 = 48 × 7/9 × 7 = 336/63 - Subtract the two like fractions:
270/63 - 336/63 = 270 - 336/63 = -66/63 - After reducing the fraction, the answer is -22/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7-48/9 30/7-96/9 30/14-48/9 30/7-48/18 90/7-48/9 30/21-48/9 30/7-48/27 30/35-48/9 30/7-48/45 30/49-48/9 30/7-48/63