Subtract 90/7 from 24/20
1st number: 1 4/20, 2nd number: 12 6/7
24/20 - 90/7 is -408/35.
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,
90/7 = 90 × 20/7 × 20 = 1800/140 - Subtract the two like fractions:
168/140 - 1800/140 = 168 - 1800/140 = -1632/140 - After reducing the fraction, the answer is -408/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/20-90/7 24/40-90/7 24/20-90/14 72/20-90/7 24/60-90/7 24/20-90/21 24/20-90/35 24/20-90/49