Subtract 70/27 from 90/28
1st number: 3 6/28, 2nd number: 2 16/27
90/28 - 70/27 is 235/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
90/28 = 90 × 27/28 × 27 = 2430/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
70/27 = 70 × 28/27 × 28 = 1960/756 - Subtract the two like fractions:
2430/756 - 1960/756 = 2430 - 1960/756 = 470/756 - After reducing the fraction, the answer is 235/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56-70/27 90/28-70/54 90/84-70/27 90/28-70/81