Add 15/27 and 4/63
15/27 + 4/63 is 13/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
15/27 = 15 × 7/27 × 7 = 105/189 - Likewise, for the 2nd fraction, since 63 × 3 = 189,
4/63 = 4 × 3/63 × 3 = 12/189 - Add the two like fractions:
105/189 + 12/189 = 105 + 12/189 = 117/189 - 117/189 simplified gives 13/21
- So, 15/27 + 4/63 = 13/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/27+4/63 15/27+8/63 15/54+4/63 45/27+4/63 15/27+12/63 15/81+4/63 75/27+4/63 15/27+20/63 15/27+28/63