Subtract 9/70 from 7/27
7/27 - 9/70 is 247/1890.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 27 × 70 = 1890,
7/27 = 7 × 70/27 × 70 = 490/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
9/70 = 9 × 27/70 × 27 = 243/1890 - Subtract the two like fractions:
490/1890 - 243/1890 = 490 - 243/1890 = 247/1890
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/27-9/70 7/27-18/70 7/54-9/70 21/27-9/70 7/27-27/70 7/81-9/70 35/27-9/70 7/27-45/70 49/27-9/70 7/27-63/70