Add 25/42 and 2/90
25/42 + 2/90 is 389/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
25/42 = 25 × 15/42 × 15 = 375/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
2/90 = 2 × 7/90 × 7 = 14/630 - Add the two like fractions:
375/630 + 14/630 = 375 + 14/630 = 389/630 - So, 25/42 + 2/90 = 389/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+2/90 25/42+4/90 25/84+2/90 75/42+2/90 25/42+6/90 25/42+10/90 25/42+14/90