Add 42/72 and 9/18
42/72 + 9/18 is 13/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
9/18 = 9 × 4/18 × 4 = 36/72 - Add the two like fractions:
42/72 + 36/72 = 42 + 36/72 = 78/72 - 78/72 simplified gives 13/12
- So, 42/72 + 9/18 = 13/12
In mixed form: 11/12
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