Add 18/27 and 42/40
1st number: 18/27, 2nd number: 1 2/40
18/27 + 42/40 is 103/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
18/27 = 18 × 40/27 × 40 = 720/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
42/40 = 42 × 27/40 × 27 = 1134/1080 - Add the two like fractions:
720/1080 + 1134/1080 = 720 + 1134/1080 = 1854/1080 - 1854/1080 simplified gives 103/60
- So, 18/27 + 42/40 = 103/60
In mixed form: 143/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+42/40 18/27+84/40 18/54+42/40 18/27+42/80 54/27+42/40 18/81+42/40 90/27+42/40