Subtract 30/14 from 42/84
1st number: 42/84, 2nd number: 2 2/14
42/84 - 30/14 is -23/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 14 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
42/84 = 42 × 1/84 × 1 = 42/84 - Likewise, for the 2nd fraction, since 14 × 6 = 84,
30/14 = 30 × 6/14 × 6 = 180/84 - Subtract the two like fractions:
42/84 - 180/84 = 42 - 180/84 = -138/84 - After reducing the fraction, the answer is -23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84-60/14 42/84-30/28 42/84-90/14 42/84-30/42 42/84-30/70 42/84-30/98