Subtract 30/9 from 45/84
1st number: 45/84, 2nd number: 3 3/9
45/84 - 30/9 is -235/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
45/84 = 45 × 3/84 × 3 = 135/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
30/9 = 30 × 28/9 × 28 = 840/252 - Subtract the two like fractions:
135/252 - 840/252 = 135 - 840/252 = -705/252 - After reducing the fraction, the answer is -235/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84-30/9 45/84-60/9 45/84-30/18 45/84-90/9 45/84-30/27 45/84-30/45 45/84-30/63