Subtract 15/10 from 50/42
1st number: 1 8/42, 2nd number: 1 5/10
50/42 - 15/10 is -13/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
50/42 = 50 × 5/42 × 5 = 250/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
15/10 = 15 × 21/10 × 21 = 315/210 - Subtract the two like fractions:
250/210 - 315/210 = 250 - 315/210 = -65/210 - After reducing the fraction, the answer is -13/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-30/10 50/84-15/10 50/42-15/20 50/42-45/10 50/42-15/30 50/42-75/10 50/42-15/50 50/42-15/70