Add 12/18 and 42/72
12/18 + 42/72 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
12/18 = 12 × 4/18 × 4 = 48/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
48/72 + 42/72 = 48 + 42/72 = 90/72 - 90/72 simplified gives 5/4
- So, 12/18 + 42/72 = 5/4
In mixed form: 11/4
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