Subtract 72/8 from 2/84
1st number: 2/84, 2nd number: 9 0/8
2/84 - 72/8 is -377/42.
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,
2/84 = 2 × 2/84 × 2 = 4/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
72/8 = 72 × 21/8 × 21 = 1512/168 - Subtract the two like fractions:
4/168 - 1512/168 = 4 - 1512/168 = -1508/168 - After reducing the fraction, the answer is -377/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/84-72/8 2/84-72/16 6/84-72/8 2/84-72/24 10/84-72/8 2/84-72/40 14/84-72/8 2/84-72/56