Subtract 18/70 from 15/27
15/27 - 18/70 is 94/315.
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,
15/27 = 15 × 70/27 × 70 = 1050/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
18/70 = 18 × 27/70 × 27 = 486/1890 - Subtract the two like fractions:
1050/1890 - 486/1890 = 1050 - 486/1890 = 564/1890 - After reducing the fraction, the answer is 94/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/27-18/70 15/27-36/70 15/54-18/70 45/27-18/70 15/27-54/70 15/81-18/70 75/27-18/70 15/27-90/70