Subtract 10/8 from 80/84
1st number: 80/84, 2nd number: 1 2/8
80/84 - 10/8 is -25/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
80/84 = 80 × 2/84 × 2 = 160/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
10/8 = 10 × 21/8 × 21 = 210/168 - Subtract the two like fractions:
160/168 - 210/168 = 160 - 210/168 = -50/168 - After reducing the fraction, the answer is -25/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-20/8 80/84-10/16 80/84-30/8 80/84-10/24 80/84-50/8 80/84-10/40 80/84-70/8 80/84-10/56