Add 25/30 and 42/84
25/30 + 42/84 is 4/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
25/30 = 25 × 14/30 × 14 = 350/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
42/84 = 42 × 5/84 × 5 = 210/420 - Add the two like fractions:
350/420 + 210/420 = 350 + 210/420 = 560/420 - 560/420 simplified gives 4/3
- So, 25/30 + 42/84 = 4/3
In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30+42/84 25/60+42/84 75/30+42/84 25/90+42/84