Add 70/84 and 70/30
1st number: 70/84, 2nd number: 2 10/30
70/84 + 70/30 is 19/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
70/84 = 70 × 5/84 × 5 = 350/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
70/30 = 70 × 14/30 × 14 = 980/420 - Add the two like fractions:
350/420 + 980/420 = 350 + 980/420 = 1330/420 - 1330/420 simplified gives 19/6
- So, 70/84 + 70/30 = 19/6
In mixed form: 31/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84+70/60 70/84+70/90