Add 16/90 and 98/21
1st number: 16/90, 2nd number: 4 14/21
16/90 + 98/21 is 218/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
16/90 = 16 × 7/90 × 7 = 112/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
98/21 = 98 × 30/21 × 30 = 2940/630 - Add the two like fractions:
112/630 + 2940/630 = 112 + 2940/630 = 3052/630 - 3052/630 simplified gives 218/45
- So, 16/90 + 98/21 = 218/45
In mixed form: 438/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/90+98/21 16/90+98/42 48/90+98/21 16/90+98/63 80/90+98/21