Add 90/42 and 12/27
1st number: 2 6/42, 2nd number: 12/27
90/42 + 12/27 is 163/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
90/42 = 90 × 9/42 × 9 = 810/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
12/27 = 12 × 14/27 × 14 = 168/378 - Add the two like fractions:
810/378 + 168/378 = 810 + 168/378 = 978/378 - 978/378 simplified gives 163/63
- So, 90/42 + 12/27 = 163/63
In mixed form: 237/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+24/27 90/84+12/27 90/42+12/54 90/42+36/27 90/42+12/81 90/42+60/27 90/42+84/27