Subtract 1/84 from 7/8
7/8 - 1/84 is 145/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
7/8 = 7 × 21/8 × 21 = 147/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
1/84 = 1 × 2/84 × 2 = 2/168 - Subtract the two like fractions:
147/168 - 2/168 = 147 - 2/168 = 145/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/8-1/84 7/8-2/84 7/16-1/84 21/8-1/84 7/8-3/84 7/24-1/84 35/8-1/84 7/8-5/84 7/40-1/84 49/8-1/84 7/8-7/84 7/56-1/84