Add 90/20 and 14/84
1st number: 4 10/20, 2nd number: 14/84
90/20 + 14/84 is 14/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
90/20 = 90 × 21/20 × 21 = 1890/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
14/84 = 14 × 5/84 × 5 = 70/420 - Add the two like fractions:
1890/420 + 70/420 = 1890 + 70/420 = 1960/420 - 1960/420 simplified gives 14/3
- So, 90/20 + 14/84 = 14/3
In mixed form: 42/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+28/84 90/40+14/84 90/20+42/84 90/60+14/84 90/20+70/84 90/20+98/84