Subtract 42/9 from 24/7
1st number: 3 3/7, 2nd number: 4 6/9
24/7 - 42/9 is -26/21.
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,
24/7 = 24 × 9/7 × 9 = 216/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
42/9 = 42 × 7/9 × 7 = 294/63 - Subtract the two like fractions:
216/63 - 294/63 = 216 - 294/63 = -78/63 - After reducing the fraction, the answer is -26/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/7-42/9 24/7-84/9 24/14-42/9 24/7-42/18 72/7-42/9 24/21-42/9 24/7-42/27 24/35-42/9 24/7-42/45 24/49-42/9 24/7-42/63