Add 20/90 and 98/63
1st number: 20/90, 2nd number: 1 35/63
20/90 + 98/63 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
98/63 = 98 × 10/63 × 10 = 980/630 - Add the two like fractions:
140/630 + 980/630 = 140 + 980/630 = 1120/630 - 1120/630 simplified gives 16/9
- So, 20/90 + 98/63 = 16/9
In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+98/63 60/90+98/63