Subtract 70/20 from 72/25
1st number: 2 22/25, 2nd number: 3 10/20
72/25 - 70/20 is -31/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
72/25 = 72 × 4/25 × 4 = 288/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
70/20 = 70 × 5/20 × 5 = 350/100 - Subtract the two like fractions:
288/100 - 350/100 = 288 - 350/100 = -62/100 - After reducing the fraction, the answer is -31/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/50-70/20 72/25-70/40 72/75-70/20 72/25-70/60