Subtract 84/10 from 3/84
1st number: 3/84, 2nd number: 8 4/10
3/84 - 84/10 is -1171/140.
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,
3/84 = 3 × 5/84 × 5 = 15/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
84/10 = 84 × 42/10 × 42 = 3528/420 - Subtract the two like fractions:
15/420 - 3528/420 = 15 - 3528/420 = -3513/420 - After reducing the fraction, the answer is -1171/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/84-84/10 3/84-84/20 9/84-84/10 3/84-84/30 15/84-84/10 3/84-84/50 21/84-84/10 3/84-84/70