Subtract 54/50 from 28/42
1st number: 28/42, 2nd number: 1 4/50
28/42 - 54/50 is -31/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
28/42 = 28 × 25/42 × 25 = 700/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
54/50 = 54 × 21/50 × 21 = 1134/1050 - Subtract the two like fractions:
700/1050 - 1134/1050 = 700 - 1134/1050 = -434/1050 - After reducing the fraction, the answer is -31/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42-54/50 28/84-54/50 84/42-54/50