Subtract 42/50 from 5/7
5/7 - 42/50 is -22/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 7 × 50 = 350,
5/7 = 5 × 50/7 × 50 = 250/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
42/50 = 42 × 7/50 × 7 = 294/350 - Subtract the two like fractions:
250/350 - 294/350 = 250 - 294/350 = -44/350 - After reducing the fraction, the answer is -22/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7-42/50 5/7-84/50 5/14-42/50 15/7-42/50 5/21-42/50 25/7-42/50 5/35-42/50 35/7-42/50 5/49-42/50