Subtract 45/10 from 50/42
1st number: 1 8/42, 2nd number: 4 5/10
50/42 - 45/10 is -139/42.
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,
45/10 = 45 × 21/10 × 21 = 945/210 - Subtract the two like fractions:
250/210 - 945/210 = 250 - 945/210 = -695/210 - After reducing the fraction, the answer is -139/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-90/10 50/84-45/10 50/42-45/20 50/42-45/30 50/42-45/50 50/42-45/70