Add 15/70 and 70/60
1st number: 15/70, 2nd number: 1 10/60
15/70 + 70/60 is 29/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
70/60 = 70 × 7/60 × 7 = 490/420 - Add the two like fractions:
90/420 + 490/420 = 90 + 490/420 = 580/420 - 580/420 simplified gives 29/21
- So, 15/70 + 70/60 = 29/21
In mixed form: 18/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70+70/60 45/70+70/60 75/70+70/60