Subtract 28/70 from 54/30
1st number: 1 24/30, 2nd number: 28/70
54/30 - 28/70 is 7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
54/30 = 54 × 7/30 × 7 = 378/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
28/70 = 28 × 3/70 × 3 = 84/210 - Subtract the two like fractions:
378/210 - 84/210 = 378 - 84/210 = 294/210 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-56/70 54/60-28/70 54/30-84/70 54/90-28/70