Add 15/20 and 25/40
15/20 + 25/40 is 11/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
15/20 = 15 × 2/20 × 2 = 30/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
25/40 = 25 × 1/40 × 1 = 25/40 - Add the two like fractions:
30/40 + 25/40 = 30 + 25/40 = 55/40 - 55/40 simplified gives 11/8
- So, 15/20 + 25/40 = 11/8
In mixed form: 13/8
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