Add 9/4 and 70/15
1st number: 2 1/4, 2nd number: 4 10/15
9/4 + 70/15 is 83/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
9/4 = 9 × 15/4 × 15 = 135/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
70/15 = 70 × 4/15 × 4 = 280/60 - Add the two like fractions:
135/60 + 280/60 = 135 + 280/60 = 415/60 - 415/60 simplified gives 83/12
- So, 9/4 + 70/15 = 83/12
In mixed form: 611/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4+70/15 9/8+70/15 9/4+70/30 27/4+70/15 9/12+70/15 9/4+70/45 45/4+70/15 9/20+70/15 9/4+70/75 63/4+70/15 9/28+70/15