Subtract 42/27 from 50/84
1st number: 50/84, 2nd number: 1 15/27
50/84 - 42/27 is -121/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
50/84 = 50 × 9/84 × 9 = 450/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
42/27 = 42 × 28/27 × 28 = 1176/756 - Subtract the two like fractions:
450/756 - 1176/756 = 450 - 1176/756 = -726/756 - After reducing the fraction, the answer is -121/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/84-84/27 50/84-42/54 50/84-42/81