Subtract 40/70 from 10/27
10/27 - 40/70 is -38/189.
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,
10/27 = 10 × 70/27 × 70 = 700/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
40/70 = 40 × 27/70 × 27 = 1080/1890 - Subtract the two like fractions:
700/1890 - 1080/1890 = 700 - 1080/1890 = -380/1890 - After reducing the fraction, the answer is -38/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/27-40/70 10/27-80/70 10/54-40/70 30/27-40/70 10/81-40/70 50/27-40/70 70/27-40/70