Add 63/54 and 18/15
1st number: 1 9/54, 2nd number: 1 3/15
63/54 + 18/15 is 71/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 15 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
63/54 = 63 × 5/54 × 5 = 315/270 - Likewise, for the 2nd fraction, since 15 × 18 = 270,
18/15 = 18 × 18/15 × 18 = 324/270 - Add the two like fractions:
315/270 + 324/270 = 315 + 324/270 = 639/270 - 639/270 simplified gives 71/30
- So, 63/54 + 18/15 = 71/30
In mixed form: 211/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/54+36/15 63/54+18/30 63/54+54/15 63/54+18/45 63/54+90/15 63/54+18/75