Add 9/15 and 54/8
1st number: 9/15, 2nd number: 6 6/8
9/15 + 54/8 is 147/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
9/15 = 9 × 8/15 × 8 = 72/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
54/8 = 54 × 15/8 × 15 = 810/120 - Add the two like fractions:
72/120 + 810/120 = 72 + 810/120 = 882/120 - 882/120 simplified gives 147/20
- So, 9/15 + 54/8 = 147/20
In mixed form: 77/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+54/8 9/30+54/8 9/15+54/16 27/15+54/8 9/45+54/8 9/15+54/24 45/15+54/8 9/75+54/8 9/15+54/40 63/15+54/8 9/15+54/56