Subtract 45/42 from 6/30
1st number: 6/30, 2nd number: 1 3/42
6/30 - 45/42 is -61/70.
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,
6/30 = 6 × 7/30 × 7 = 42/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
45/42 = 45 × 5/42 × 5 = 225/210 - Subtract the two like fractions:
42/210 - 225/210 = 42 - 225/210 = -183/210 - After reducing the fraction, the answer is -61/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/30-45/42 6/30-90/42 6/60-45/42 6/30-45/84 18/30-45/42 6/90-45/42 42/30-45/42