Subtract 3/84 from 10/40
10/40 - 3/84 is 3/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
10/40 = 10 × 21/40 × 21 = 210/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
3/84 = 3 × 10/84 × 10 = 30/840 - Subtract the two like fractions:
210/840 - 30/840 = 210 - 30/840 = 180/840 - After reducing the fraction, the answer is 3/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-3/84 10/40-6/84 10/80-3/84 30/40-3/84 10/40-9/84 50/40-3/84 10/40-15/84 70/40-3/84 10/40-21/84