Subtract 8/84 from 7/4
1st number: 1 3/4, 2nd number: 8/84
7/4 - 8/84 is 139/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
7/4 = 7 × 21/4 × 21 = 147/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
8/84 = 8 × 1/84 × 1 = 8/84 - Subtract the two like fractions:
147/84 - 8/84 = 147 - 8/84 = 139/84 - In mixed form: 155/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4-8/84 7/4-16/84 7/8-8/84 21/4-8/84 7/4-24/84 7/12-8/84 35/4-8/84 7/4-40/84 7/20-8/84 49/4-8/84 7/4-56/84 7/28-8/84