Add 90/54 and 80/14
1st number: 1 36/54, 2nd number: 5 10/14
90/54 + 80/14 is 155/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 14 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378 - Likewise, for the 2nd fraction, since 14 × 27 = 378,
80/14 = 80 × 27/14 × 27 = 2160/378 - Add the two like fractions:
630/378 + 2160/378 = 630 + 2160/378 = 2790/378 - 2790/378 simplified gives 155/21
- So, 90/54 + 80/14 = 155/21
In mixed form: 78/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/54+80/28 90/54+80/42 90/54+80/70 90/54+80/98