Add 21/24 and 42/54
21/24 + 42/54 is 119/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 24 × 9 = 216,
21/24 = 21 × 9/24 × 9 = 189/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
42/54 = 42 × 4/54 × 4 = 168/216 - Add the two like fractions:
189/216 + 168/216 = 189 + 168/216 = 357/216 - 357/216 simplified gives 119/72
- So, 21/24 + 42/54 = 119/72
In mixed form: 147/72
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