Add 15/4 and 70/9
1st number: 3 3/4, 2nd number: 7 7/9
15/4 + 70/9 is 415/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
15/4 = 15 × 9/4 × 9 = 135/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
70/9 = 70 × 4/9 × 4 = 280/36 - Add the two like fractions:
135/36 + 280/36 = 135 + 280/36 = 415/36 - So, 15/4 + 70/9 = 415/36
In mixed form: 1119/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4+70/9 15/8+70/9 15/4+70/18 45/4+70/9 15/12+70/9 15/4+70/27 75/4+70/9 15/20+70/9 15/4+70/45 15/28+70/9 15/4+70/63