Add 54/21 and 12/63
1st number: 2 12/21, 2nd number: 12/63
54/21 + 12/63 is 58/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
54/21 = 54 × 3/21 × 3 = 162/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
12/63 = 12 × 1/63 × 1 = 12/63 - Add the two like fractions:
162/63 + 12/63 = 162 + 12/63 = 174/63 - 174/63 simplified gives 58/21
- So, 54/21 + 12/63 = 58/21
In mixed form: 216/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+24/63 54/42+12/63 54/21+36/63 54/63+12/63 54/21+60/63 54/21+84/63