Add 81/40 and 30/9
1st number: 2 1/40, 2nd number: 3 3/9
81/40 + 30/9 is 643/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
81/40 = 81 × 9/40 × 9 = 729/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
30/9 = 30 × 40/9 × 40 = 1200/360 - Add the two like fractions:
729/360 + 1200/360 = 729 + 1200/360 = 1929/360 - 1929/360 simplified gives 643/120
- So, 81/40 + 30/9 = 643/120
In mixed form: 543/120
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