Add 35/84 and 81/40
1st number: 35/84, 2nd number: 2 1/40
35/84 + 81/40 is 293/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
35/84 = 35 × 10/84 × 10 = 350/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
81/40 = 81 × 21/40 × 21 = 1701/840 - Add the two like fractions:
350/840 + 1701/840 = 350 + 1701/840 = 2051/840 - 2051/840 simplified gives 293/120
- So, 35/84 + 81/40 = 293/120
In mixed form: 253/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84+81/40 35/84+81/80