Subtract 4/70 from 7/54
7/54 - 4/70 is 137/1890.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
7/54 = 7 × 35/54 × 35 = 245/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
4/70 = 4 × 27/70 × 27 = 108/1890 - Subtract the two like fractions:
245/1890 - 108/1890 = 245 - 108/1890 = 137/1890
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/54-4/70 7/54-8/70 21/54-4/70 7/54-12/70 35/54-4/70 7/54-20/70 49/54-4/70 7/54-28/70