Subtract 56/30 from 75/42
1st number: 1 33/42, 2nd number: 1 26/30
75/42 - 56/30 is -17/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
75/42 = 75 × 5/42 × 5 = 375/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
56/30 = 56 × 7/30 × 7 = 392/210 - Subtract the two like fractions:
375/210 - 392/210 = 375 - 392/210 = -17/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/84-56/30 75/42-56/60 75/42-56/90