Add 81/54 and 42/72
1st number: 1 27/54, 2nd number: 42/72
81/54 + 42/72 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 72 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
81/54 = 81 × 4/54 × 4 = 324/216 - Likewise, for the 2nd fraction, since 72 × 3 = 216,
42/72 = 42 × 3/72 × 3 = 126/216 - Add the two like fractions:
324/216 + 126/216 = 324 + 126/216 = 450/216 - 450/216 simplified gives 25/12
- So, 81/54 + 42/72 = 25/12
In mixed form: 21/12
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