Subtract 24/4 from 20/70
1st number: 20/70, 2nd number: 6 0/4
20/70 - 24/4 is -40/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
24/4 = 24 × 35/4 × 35 = 840/140 - Subtract the two like fractions:
40/140 - 840/140 = 40 - 840/140 = -800/140 - After reducing the fraction, the answer is -40/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70-24/4 20/70-48/4 20/70-24/8 60/70-24/4 20/70-72/4 20/70-24/12 20/70-24/20 20/70-24/28