Subtract 70/42 from 10/27
1st number: 10/27, 2nd number: 1 28/42
10/27 - 70/42 is -35/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
10/27 = 10 × 14/27 × 14 = 140/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
70/42 = 70 × 9/42 × 9 = 630/378 - Subtract the two like fractions:
140/378 - 630/378 = 140 - 630/378 = -490/378 - After reducing the fraction, the answer is -35/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/27-70/42 10/54-70/42 10/27-70/84 30/27-70/42 10/81-70/42 50/27-70/42 70/27-70/42