Subtract 30/18 from 24/84
1st number: 24/84, 2nd number: 1 12/18
24/84 - 30/18 is -29/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
24/84 = 24 × 3/84 × 3 = 72/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
30/18 = 30 × 14/18 × 14 = 420/252 - Subtract the two like fractions:
72/252 - 420/252 = 72 - 420/252 = -348/252 - After reducing the fraction, the answer is -29/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/84-30/18 24/84-60/18 24/84-30/36 72/84-30/18 24/84-90/18 24/84-30/54 24/84-30/90