Add 15/8 and 9/40
1st number: 1 7/8, 2nd number: 9/40
15/8 + 9/40 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
15/8 = 15 × 5/8 × 5 = 75/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
9/40 = 9 × 1/40 × 1 = 9/40 - Add the two like fractions:
75/40 + 9/40 = 75 + 9/40 = 84/40 - 84/40 simplified gives 21/10
- So, 15/8 + 9/40 = 21/10
In mixed form: 21/10
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