Subtract 80/21 from 84/35
1st number: 2 14/35, 2nd number: 3 17/21
84/35 - 80/21 is -148/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
84/35 = 84 × 3/35 × 3 = 252/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
80/21 = 80 × 5/21 × 5 = 400/105 - Subtract the two like fractions:
252/105 - 400/105 = 252 - 400/105 = -148/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70-80/21 84/35-80/42 84/35-80/63