Subtract 3/9 from 32/42
32/42 - 3/9 is 3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
32/42 = 32 × 3/42 × 3 = 96/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
3/9 = 3 × 14/9 × 14 = 42/126 - Subtract the two like fractions:
96/126 - 42/126 = 96 - 42/126 = 54/126 - After reducing the fraction, the answer is 3/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/42-3/9 32/42-6/9 32/84-3/9 32/42-3/18 96/42-3/9 32/42-3/27 32/42-15/9 32/42-3/45 32/42-21/9 32/42-3/63