Add 81/18 and 42/72
1st number: 4 9/18, 2nd number: 42/72
81/18 + 42/72 is 61/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
81/18 = 81 × 4/18 × 4 = 324/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
324/72 + 42/72 = 324 + 42/72 = 366/72 - 366/72 simplified gives 61/12
- So, 81/18 + 42/72 = 61/12
In mixed form: 51/12
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