Add 63/21 and 54/12
1st number: 3 0/21, 2nd number: 4 6/12
63/21 + 54/12 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
63/21 = 63 × 4/21 × 4 = 252/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
54/12 = 54 × 7/12 × 7 = 378/84 - Add the two like fractions:
252/84 + 378/84 = 252 + 378/84 = 630/84 - 630/84 simplified gives 15/2
- So, 63/21 + 54/12 = 15/2
In mixed form: 71/2
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