Add 28/18 and 81/40
1st number: 1 10/18, 2nd number: 2 1/40
28/18 + 81/40 is 1289/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
28/18 = 28 × 20/18 × 20 = 560/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
81/40 = 81 × 9/40 × 9 = 729/360 - Add the two like fractions:
560/360 + 729/360 = 560 + 729/360 = 1289/360 - So, 28/18 + 81/40 = 1289/360
In mixed form: 3209/360
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