Subtract 40/3 from 50/42
1st number: 1 8/42, 2nd number: 13 1/3
50/42 - 40/3 is -85/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
50/42 = 50 × 1/42 × 1 = 50/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
40/3 = 40 × 14/3 × 14 = 560/42 - Subtract the two like fractions:
50/42 - 560/42 = 50 - 560/42 = -510/42 - After reducing the fraction, the answer is -85/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-80/3 50/84-40/3 50/42-40/6 50/42-40/9 50/42-40/15 50/42-40/21