Subtract 45/30 from 70/20
1st number: 3 10/20, 2nd number: 1 15/30
70/20 - 45/30 is 2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
70/20 = 70 × 3/20 × 3 = 210/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
45/30 = 45 × 2/30 × 2 = 90/60 - Subtract the two like fractions:
210/60 - 90/60 = 210 - 90/60 = 120/60 - After reducing the fraction, the answer is 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-90/30 70/40-45/30 70/20-45/60 70/60-45/30 70/20-45/90