Add 81/72 and 72/18
1st number: 1 9/72, 2nd number: 4 0/18
81/72 + 72/18 is 41/8.
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,
72/18 = 72 × 4/18 × 4 = 288/72 - Add the two like fractions:
81/72 + 288/72 = 81 + 288/72 = 369/72 - 369/72 simplified gives 41/8
- So, 81/72 + 72/18 = 41/8
In mixed form: 51/8
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