Subtract 56/54 from 15/70
1st number: 15/70, 2nd number: 1 2/54
15/70 - 56/54 is -311/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
15/70 = 15 × 27/70 × 27 = 405/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
56/54 = 56 × 35/54 × 35 = 1960/1890 - Subtract the two like fractions:
405/1890 - 1960/1890 = 405 - 1960/1890 = -1555/1890 - After reducing the fraction, the answer is -311/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70-56/54 45/70-56/54 75/70-56/54