Add 21/15 and 81/32
1st number: 1 6/15, 2nd number: 2 17/32
21/15 + 81/32 is 629/160.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 32 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 15 × 32 = 480,
21/15 = 21 × 32/15 × 32 = 672/480 - Likewise, for the 2nd fraction, since 32 × 15 = 480,
81/32 = 81 × 15/32 × 15 = 1215/480 - Add the two like fractions:
672/480 + 1215/480 = 672 + 1215/480 = 1887/480 - 1887/480 simplified gives 629/160
- So, 21/15 + 81/32 = 629/160
In mixed form: 3149/160
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