Add 81/72 and 84/18
1st number: 1 9/72, 2nd number: 4 12/18
81/72 + 84/18 is 139/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
84/18 = 84 × 4/18 × 4 = 336/72 - Add the two like fractions:
81/72 + 336/72 = 81 + 336/72 = 417/72 - 417/72 simplified gives 139/24
- So, 81/72 + 84/18 = 139/24
In mixed form: 519/24
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