Add 12/20 and 18/40
12/20 + 18/40 is 21/20.
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,
12/20 = 12 × 2/20 × 2 = 24/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
18/40 = 18 × 1/40 × 1 = 18/40 - Add the two like fractions:
24/40 + 18/40 = 24 + 18/40 = 42/40 - 42/40 simplified gives 21/20
- So, 12/20 + 18/40 = 21/20
In mixed form: 11/20
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