Subtract 30/96 from 20/42
20/42 - 30/96 is 55/336.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 96 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 42 × 16 = 672,
20/42 = 20 × 16/42 × 16 = 320/672 - Likewise, for the 2nd fraction, since 96 × 7 = 672,
30/96 = 30 × 7/96 × 7 = 210/672 - Subtract the two like fractions:
320/672 - 210/672 = 320 - 210/672 = 110/672 - After reducing the fraction, the answer is 55/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42-30/96 20/42-60/96 20/84-30/96 60/42-30/96 20/42-90/96