Add 25/90 and 72/84
25/90 + 72/84 is 143/126.
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,
72/84 = 72 × 15/84 × 15 = 1080/1260 - Add the two like fractions:
350/1260 + 1080/1260 = 350 + 1080/1260 = 1430/1260 - 1430/1260 simplified gives 143/126
- So, 25/90 + 72/84 = 143/126
In mixed form: 117/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90+72/84 75/90+72/84