Subtract 25/54 from 70/42
1st number: 1 28/42, 2nd number: 25/54
70/42 - 25/54 is 65/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
70/42 = 70 × 9/42 × 9 = 630/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
25/54 = 25 × 7/54 × 7 = 175/378 - Subtract the two like fractions:
630/378 - 175/378 = 630 - 175/378 = 455/378 - After reducing the fraction, the answer is 65/54
- In mixed form: 111/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-50/54 70/84-25/54 70/42-75/54