Subtract 30/10 from 10/84
1st number: 10/84, 2nd number: 3 0/10
10/84 - 30/10 is -121/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
10/84 = 10 × 5/84 × 5 = 50/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
30/10 = 30 × 42/10 × 42 = 1260/420 - Subtract the two like fractions:
50/420 - 1260/420 = 50 - 1260/420 = -1210/420 - After reducing the fraction, the answer is -121/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84-30/10 10/84-60/10 10/84-30/20 30/84-30/10 10/84-90/10 50/84-30/10 10/84-30/50 70/84-30/10 10/84-30/70