Subtract 42/63 from 75/18
1st number: 4 3/18, 2nd number: 42/63
75/18 - 42/63 is 7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
75/18 = 75 × 7/18 × 7 = 525/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
42/63 = 42 × 2/63 × 2 = 84/126 - Subtract the two like fractions:
525/126 - 84/126 = 525 - 84/126 = 441/126 - After reducing the fraction, the answer is 7/2
- In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/18-84/63 75/36-42/63 75/54-42/63 75/90-42/63