Subtract 9/30 from 5/84
5/84 - 9/30 is -101/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
9/30 = 9 × 14/30 × 14 = 126/420 - Subtract the two like fractions:
25/420 - 126/420 = 25 - 126/420 = -101/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/84-9/30 5/84-18/30 5/84-9/60 15/84-9/30 5/84-27/30 5/84-9/90 25/84-9/30 5/84-45/30 35/84-9/30 5/84-63/30