Subtract 18/7 from 24/20
1st number: 1 4/20, 2nd number: 2 4/7
24/20 - 18/7 is -48/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
24/20 = 24 × 7/20 × 7 = 168/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
18/7 = 18 × 20/7 × 20 = 360/140 - Subtract the two like fractions:
168/140 - 360/140 = 168 - 360/140 = -192/140 - After reducing the fraction, the answer is -48/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/20-18/7 24/20-36/7 24/40-18/7 24/20-18/14 72/20-18/7 24/20-54/7 24/60-18/7 24/20-18/21 24/20-90/7 24/20-18/35 24/20-18/49