Add 63/84 and 54/45
1st number: 63/84, 2nd number: 1 9/45
63/84 + 54/45 is 39/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
63/84 = 63 × 15/84 × 15 = 945/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
54/45 = 54 × 28/45 × 28 = 1512/1260 - Add the two like fractions:
945/1260 + 1512/1260 = 945 + 1512/1260 = 2457/1260 - 2457/1260 simplified gives 39/20
- So, 63/84 + 54/45 = 39/20
In mixed form: 119/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84+54/90