Add 25/90 and 18/84
25/90 + 18/84 is 31/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
25/90 = 25 × 14/90 × 14 = 350/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
18/84 = 18 × 15/84 × 15 = 270/1260 - Add the two like fractions:
350/1260 + 270/1260 = 350 + 270/1260 = 620/1260 - 620/1260 simplified gives 31/63
- So, 25/90 + 18/84 = 31/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90+18/84 25/90+36/84 75/90+18/84 25/90+54/84 25/90+90/84