Subtract 15/54 from 5/70
5/70 - 15/54 is -13/63.
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,
5/70 = 5 × 27/70 × 27 = 135/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
15/54 = 15 × 35/54 × 35 = 525/1890 - Subtract the two like fractions:
135/1890 - 525/1890 = 135 - 525/1890 = -390/1890 - After reducing the fraction, the answer is -13/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/70-15/54 5/70-30/54 15/70-15/54 5/70-45/54 25/70-15/54 5/70-75/54 35/70-15/54