Add 21/16 and 12/45
1st number: 1 5/16, 2nd number: 12/45
21/16 + 12/45 is 379/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
12/45 = 12 × 16/45 × 16 = 192/720 - Add the two like fractions:
945/720 + 192/720 = 945 + 192/720 = 1137/720 - 1137/720 simplified gives 379/240
- So, 21/16 + 12/45 = 379/240
In mixed form: 1139/240
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