Subtract 50/42 from 42/30
1st number: 1 12/30, 2nd number: 1 8/42
42/30 - 50/42 is 22/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
50/42 = 50 × 5/42 × 5 = 250/210 - Subtract the two like fractions:
294/210 - 250/210 = 294 - 250/210 = 44/210 - After reducing the fraction, the answer is 22/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-50/42 42/60-50/42 42/30-50/84 42/90-50/42