Add 20/40 and 15/80
20/40 + 15/80 is 11/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
20/40 = 20 × 2/40 × 2 = 40/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
15/80 = 15 × 1/80 × 1 = 15/80 - Add the two like fractions:
40/80 + 15/80 = 40 + 15/80 = 55/80 - 55/80 simplified gives 11/16
- So, 20/40 + 15/80 = 11/16
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