Add 18/16 and 21/72
1st number: 1 2/16, 2nd number: 21/72
18/16 + 21/72 is 17/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 72 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
18/16 = 18 × 9/16 × 9 = 162/144 - Likewise, for the 2nd fraction, since 72 × 2 = 144,
21/72 = 21 × 2/72 × 2 = 42/144 - Add the two like fractions:
162/144 + 42/144 = 162 + 42/144 = 204/144 - 204/144 simplified gives 17/12
- So, 18/16 + 21/72 = 17/12
In mixed form: 15/12
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