Subtract 7/27 from 3/70
3/70 - 7/27 is -409/1890.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 27 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
3/70 = 3 × 27/70 × 27 = 81/1890 - Likewise, for the 2nd fraction, since 27 × 70 = 1890,
7/27 = 7 × 70/27 × 70 = 490/1890 - Subtract the two like fractions:
81/1890 - 490/1890 = 81 - 490/1890 = -409/1890
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70-7/27 3/70-14/27 3/70-7/54 9/70-7/27 3/70-21/27 3/70-7/81 15/70-7/27 3/70-35/27 21/70-7/27 3/70-49/27