Add 21/70 and 36/15
1st number: 21/70, 2nd number: 2 6/15
21/70 + 36/15 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
36/15 = 36 × 14/15 × 14 = 504/210 - Add the two like fractions:
63/210 + 504/210 = 63 + 504/210 = 567/210 - 567/210 simplified gives 27/10
- So, 21/70 + 36/15 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+36/15 21/70+72/15 21/70+36/30 63/70+36/15 21/70+36/45 21/70+36/75