Add 18/12 and 21/72
1st number: 1 6/12, 2nd number: 21/72
18/12 + 21/72 is 43/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
18/12 = 18 × 6/12 × 6 = 108/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Add the two like fractions:
108/72 + 21/72 = 108 + 21/72 = 129/72 - 129/72 simplified gives 43/24
- So, 18/12 + 21/72 = 43/24
In mixed form: 119/24
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