Add 12/18 and 21/72
12/18 + 21/72 is 23/24.
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,
21/72 = 21 × 1/72 × 1 = 21/72 - Add the two like fractions:
48/72 + 21/72 = 48 + 21/72 = 69/72 - 69/72 simplified gives 23/24
- So, 12/18 + 21/72 = 23/24
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