Add 18/36 and 42/72
18/36 + 42/72 is 13/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
18/36 = 18 × 2/36 × 2 = 36/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
36/72 + 42/72 = 36 + 42/72 = 78/72 - 78/72 simplified gives 13/12
- So, 18/36 + 42/72 = 13/12
In mixed form: 11/12
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