Subtract 6/36 from 90/42
1st number: 2 6/42, 2nd number: 6/36
90/42 - 6/36 is 83/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
90/42 = 90 × 6/42 × 6 = 540/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
6/36 = 6 × 7/36 × 7 = 42/252 - Subtract the two like fractions:
540/252 - 42/252 = 540 - 42/252 = 498/252 - After reducing the fraction, the answer is 83/42
- In mixed form: 141/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-12/36 90/84-6/36 90/42-6/72 90/42-18/36 90/42-30/36 90/42-42/36