Add 80/49 and 20/90
1st number: 1 31/49, 2nd number: 20/90
80/49 + 20/90 is 818/441.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 49 × 90 = 4410,
80/49 = 80 × 90/49 × 90 = 7200/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
20/90 = 20 × 49/90 × 49 = 980/4410 - Add the two like fractions:
7200/4410 + 980/4410 = 7200 + 980/4410 = 8180/4410 - 8180/4410 simplified gives 818/441
- So, 80/49 + 20/90 = 818/441
In mixed form: 1377/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/49+40/90 80/98+20/90 80/49+60/90