Subtract 9/35 from 15/42
15/42 - 9/35 is 1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
15/42 = 15 × 5/42 × 5 = 75/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
9/35 = 9 × 6/35 × 6 = 54/210 - Subtract the two like fractions:
75/210 - 54/210 = 75 - 54/210 = 21/210 - After reducing the fraction, the answer is 1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/42-9/35 15/42-18/35 15/84-9/35 15/42-9/70 45/42-9/35 15/42-27/35 75/42-9/35 15/42-45/35 15/42-63/35