Subtract 21/27 from 42/50
42/50 - 21/27 is 14/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 27 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 50 × 27 = 1350,
42/50 = 42 × 27/50 × 27 = 1134/1350 - Likewise, for the 2nd fraction, since 27 × 50 = 1350,
21/27 = 21 × 50/27 × 50 = 1050/1350 - Subtract the two like fractions:
1134/1350 - 1050/1350 = 1134 - 1050/1350 = 84/1350 - After reducing the fraction, the answer is 14/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/50-21/27 42/50-42/27 42/50-21/54 42/50-63/27 42/50-21/81