Subtract 28/35 from 90/75
1st number: 1 15/75, 2nd number: 28/35
90/75 - 28/35 is 2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 35 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
90/75 = 90 × 7/75 × 7 = 630/525 - Likewise, for the 2nd fraction, since 35 × 15 = 525,
28/35 = 28 × 15/35 × 15 = 420/525 - Subtract the two like fractions:
630/525 - 420/525 = 630 - 420/525 = 210/525 - After reducing the fraction, the answer is 2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75-56/35 90/75-28/70 90/75-84/35