Add 28/40 and 18/20
28/40 + 18/20 is 8/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
18/20 = 18 × 2/20 × 2 = 36/40 - Add the two like fractions:
28/40 + 36/40 = 28 + 36/40 = 64/40 - 64/40 simplified gives 8/5
- So, 28/40 + 18/20 = 8/5
In mixed form: 13/5
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