Add 20/24 and 42/72
20/24 + 42/72 is 17/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
20/24 = 20 × 3/24 × 3 = 60/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
60/72 + 42/72 = 60 + 42/72 = 102/72 - 102/72 simplified gives 17/12
- So, 20/24 + 42/72 = 17/12
In mixed form: 15/12
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