Add 2/90 and 25/21
1st number: 2/90, 2nd number: 1 4/21
2/90 + 25/21 is 382/315.
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,
2/90 = 2 × 7/90 × 7 = 14/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
25/21 = 25 × 30/21 × 30 = 750/630 - Add the two like fractions:
14/630 + 750/630 = 14 + 750/630 = 764/630 - 764/630 simplified gives 382/315
- So, 2/90 + 25/21 = 382/315
In mixed form: 167/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/90+25/21 2/90+50/21 2/90+25/42 6/90+25/21 2/90+75/21 2/90+25/63 10/90+25/21 14/90+25/21