Subtract 30/28 from 42/25
1st number: 1 17/25, 2nd number: 1 2/28
42/25 - 30/28 is 213/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 28 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 25 × 28 = 700,
42/25 = 42 × 28/25 × 28 = 1176/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
30/28 = 30 × 25/28 × 25 = 750/700 - Subtract the two like fractions:
1176/700 - 750/700 = 1176 - 750/700 = 426/700 - After reducing the fraction, the answer is 213/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25-30/28 42/25-60/28 42/50-30/28 42/25-30/56 42/25-90/28 42/75-30/28 42/25-30/84