Subtract 75/30 from 60/42
1st number: 1 18/42, 2nd number: 2 15/30
60/42 - 75/30 is -15/14.
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,
60/42 = 60 × 5/42 × 5 = 300/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
75/30 = 75 × 7/30 × 7 = 525/210 - Subtract the two like fractions:
300/210 - 525/210 = 300 - 525/210 = -225/210 - After reducing the fraction, the answer is -15/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84-75/30 60/42-75/60 60/42-75/90