Subtract 42/90 from 84/75
1st number: 1 9/75, 2nd number: 42/90
84/75 - 42/90 is 49/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
84/75 = 84 × 6/75 × 6 = 504/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
42/90 = 42 × 5/90 × 5 = 210/450 - Subtract the two like fractions:
504/450 - 210/450 = 504 - 210/450 = 294/450 - After reducing the fraction, the answer is 49/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/75-84/90