Subtract 9/42 from 9/16
9/16 - 9/42 is 39/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
9/16 = 9 × 21/16 × 21 = 189/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
9/42 = 9 × 8/42 × 8 = 72/336 - Subtract the two like fractions:
189/336 - 72/336 = 189 - 72/336 = 117/336 - After reducing the fraction, the answer is 39/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/16-9/42 9/16-18/42 9/32-9/42 9/16-9/84 27/16-9/42 9/16-27/42 9/48-9/42 45/16-9/42 9/16-45/42 9/80-9/42 63/16-9/42 9/16-63/42