Add 7/40 and 81/30
1st number: 7/40, 2nd number: 2 21/30
7/40 + 81/30 is 23/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
81/30 = 81 × 4/30 × 4 = 324/120 - Add the two like fractions:
21/120 + 324/120 = 21 + 324/120 = 345/120 - 345/120 simplified gives 23/8
- So, 7/40 + 81/30 = 23/8
In mixed form: 27/8
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