Subtract 50/63 from 3/42
3/42 - 50/63 is -13/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
3/42 = 3 × 3/42 × 3 = 9/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
50/63 = 50 × 2/63 × 2 = 100/126 - Subtract the two like fractions:
9/126 - 100/126 = 9 - 100/126 = -91/126 - After reducing the fraction, the answer is -13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42-50/63 3/84-50/63 9/42-50/63 15/42-50/63 21/42-50/63