Add 28/32 and 18/81
28/32 + 18/81 is 79/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 81 is 2592
Next, find the equivalent fraction of both fractional numbers with denominator 2592 - For the 1st fraction, since 32 × 81 = 2592,
28/32 = 28 × 81/32 × 81 = 2268/2592 - Likewise, for the 2nd fraction, since 81 × 32 = 2592,
18/81 = 18 × 32/81 × 32 = 576/2592 - Add the two like fractions:
2268/2592 + 576/2592 = 2268 + 576/2592 = 2844/2592 - 2844/2592 simplified gives 79/72
- So, 28/32 + 18/81 = 79/72
In mixed form: 17/72
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