Subtract 7/54 from 7/70
7/70 - 7/54 is -4/135.
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,
7/70 = 7 × 27/70 × 27 = 189/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
7/54 = 7 × 35/54 × 35 = 245/1890 - Subtract the two like fractions:
189/1890 - 245/1890 = 189 - 245/1890 = -56/1890 - After reducing the fraction, the answer is -4/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70-7/54 7/70-14/54 21/70-7/54 7/70-21/54 35/70-7/54 7/70-35/54 49/70-7/54 7/70-49/54