Subtract 42/8 from 14/84
1st number: 14/84, 2nd number: 5 2/8
14/84 - 42/8 is -61/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
14/84 = 14 × 2/84 × 2 = 28/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
42/8 = 42 × 21/8 × 21 = 882/168 - Subtract the two like fractions:
28/168 - 882/168 = 28 - 882/168 = -854/168 - After reducing the fraction, the answer is -61/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/84-42/8 14/84-84/8 14/84-42/16 42/84-42/8 14/84-42/24 70/84-42/8 14/84-42/40 98/84-42/8 14/84-42/56