Subtract 90/27 from 70/15
1st number: 4 10/15, 2nd number: 3 9/27
70/15 - 90/27 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 15 × 9 = 135,
70/15 = 70 × 9/15 × 9 = 630/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
90/27 = 90 × 5/27 × 5 = 450/135 - Subtract the two like fractions:
630/135 - 450/135 = 630 - 450/135 = 180/135 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30-90/27 70/15-90/54 70/45-90/27 70/15-90/81 70/75-90/27