Add 42/20 and 12/27
1st number: 2 2/20, 2nd number: 12/27
42/20 + 12/27 is 229/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
42/20 = 42 × 27/20 × 27 = 1134/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
12/27 = 12 × 20/27 × 20 = 240/540 - Add the two like fractions:
1134/540 + 240/540 = 1134 + 240/540 = 1374/540 - 1374/540 simplified gives 229/90
- So, 42/20 + 12/27 = 229/90
In mixed form: 249/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20+12/27 42/20+24/27 42/40+12/27 42/20+12/54 42/20+36/27 42/60+12/27 42/20+12/81 42/20+60/27 42/20+84/27