Subtract 2/18 from 50/42
1st number: 1 8/42, 2nd number: 2/18
50/42 - 2/18 is 68/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
50/42 = 50 × 3/42 × 3 = 150/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
2/18 = 2 × 7/18 × 7 = 14/126 - Subtract the two like fractions:
150/126 - 14/126 = 150 - 14/126 = 136/126 - After reducing the fraction, the answer is 68/63
- In mixed form: 15/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-4/18 50/84-2/18 50/42-2/36 50/42-6/18 50/42-2/54 50/42-10/18 50/42-2/90 50/42-14/18