Add 12/21 and 45/4
1st number: 12/21, 2nd number: 11 1/4
12/21 + 45/4 is 331/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
12/21 = 12 × 4/21 × 4 = 48/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
45/4 = 45 × 21/4 × 21 = 945/84 - Add the two like fractions:
48/84 + 945/84 = 48 + 945/84 = 993/84 - 993/84 simplified gives 331/28
- So, 12/21 + 45/4 = 331/28
In mixed form: 1123/28
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