Add 25/30 and 70/84
25/30 + 70/84 is 5/3.
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,
70/84 = 70 × 5/84 × 5 = 350/420 - Add the two like fractions:
350/420 + 350/420 = 350 + 350/420 = 700/420 - 700/420 simplified gives 5/3
- So, 25/30 + 70/84 = 5/3
In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30+70/84 25/60+70/84 75/30+70/84 25/90+70/84