Subtract 2/42 from 8/16
8/16 - 2/42 is 19/42.
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,
8/16 = 8 × 21/16 × 21 = 168/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
2/42 = 2 × 8/42 × 8 = 16/336 - Subtract the two like fractions:
168/336 - 16/336 = 168 - 16/336 = 152/336 - After reducing the fraction, the answer is 19/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/16-4/42 8/32-2/42 8/16-2/84 24/16-2/42 8/16-6/42 8/48-2/42 40/16-2/42 8/16-10/42 8/80-2/42 56/16-2/42 8/16-14/42