Subtract 9/42 from 18/60
18/60 - 9/42 is 3/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
18/60 = 18 × 7/60 × 7 = 126/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
9/42 = 9 × 10/42 × 10 = 90/420 - Subtract the two like fractions:
126/420 - 90/420 = 126 - 90/420 = 36/420 - After reducing the fraction, the answer is 3/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/60-9/42 18/60-18/42 18/60-9/84 54/60-9/42 18/60-27/42 90/60-9/42 18/60-45/42 18/60-63/42