Subtract 15/7 from 42/50
1st number: 42/50, 2nd number: 2 1/7
42/50 - 15/7 is -228/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 7 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
42/50 = 42 × 7/50 × 7 = 294/350 - Likewise, for the 2nd fraction, since 7 × 50 = 350,
15/7 = 15 × 50/7 × 50 = 750/350 - Subtract the two like fractions:
294/350 - 750/350 = 294 - 750/350 = -456/350 - After reducing the fraction, the answer is -228/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/50-15/7 42/50-30/7 42/50-15/14 42/50-45/7 42/50-15/21 42/50-75/7 42/50-15/35 42/50-15/49