Subtract 42/96 from 72/84
72/84 - 42/96 is 47/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 96 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 84 × 8 = 672,
72/84 = 72 × 8/84 × 8 = 576/672 - Likewise, for the 2nd fraction, since 96 × 7 = 672,
42/96 = 42 × 7/96 × 7 = 294/672 - Subtract the two like fractions:
576/672 - 294/672 = 576 - 294/672 = 282/672 - After reducing the fraction, the answer is 47/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84-84/96