Add 21/72 and 36/27
1st number: 21/72, 2nd number: 1 9/27
21/72 + 36/27 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
21/72 = 21 × 3/72 × 3 = 63/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
36/27 = 36 × 8/27 × 8 = 288/216 - Add the two like fractions:
63/216 + 288/216 = 63 + 288/216 = 351/216 - 351/216 simplified gives 13/8
- So, 21/72 + 36/27 = 13/8
In mixed form: 15/8
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