Add 30/75 and 81/72
1st number: 30/75, 2nd number: 1 9/72
30/75 + 81/72 is 61/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 75 × 24 = 1800,
30/75 = 30 × 24/75 × 24 = 720/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
81/72 = 81 × 25/72 × 25 = 2025/1800 - Add the two like fractions:
720/1800 + 2025/1800 = 720 + 2025/1800 = 2745/1800 - 2745/1800 simplified gives 61/40
- So, 30/75 + 81/72 = 61/40
In mixed form: 121/40
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