Add 90/42 and 42/54
1st number: 2 6/42, 2nd number: 42/54
90/42 + 42/54 is 184/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 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 54 × 7 = 378,
42/54 = 42 × 7/54 × 7 = 294/378 - Add the two like fractions:
810/378 + 294/378 = 810 + 294/378 = 1104/378 - 1104/378 simplified gives 184/63
- So, 90/42 + 42/54 = 184/63
In mixed form: 258/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+84/54 90/84+42/54