Add 42/54 and 98/40
1st number: 42/54, 2nd number: 2 18/40
42/54 + 98/40 is 581/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 54 × 20 = 1080,
42/54 = 42 × 20/54 × 20 = 840/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
98/40 = 98 × 27/40 × 27 = 2646/1080 - Add the two like fractions:
840/1080 + 2646/1080 = 840 + 2646/1080 = 3486/1080 - 3486/1080 simplified gives 581/180
- So, 42/54 + 98/40 = 581/180
In mixed form: 341/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/54+98/40 42/54+98/80