Add 81/18 and 18/72
1st number: 4 9/18, 2nd number: 18/72
81/18 + 18/72 is 19/4.
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,
18/72 = 18 × 1/72 × 1 = 18/72 - Add the two like fractions:
324/72 + 18/72 = 324 + 18/72 = 342/72 - 342/72 simplified gives 19/4
- So, 81/18 + 18/72 = 19/4
In mixed form: 43/4
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