Add 42/48 and 21/54
42/48 + 21/54 is 91/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 54 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 48 × 9 = 432,
42/48 = 42 × 9/48 × 9 = 378/432 - Likewise, for the 2nd fraction, since 54 × 8 = 432,
21/54 = 21 × 8/54 × 8 = 168/432 - Add the two like fractions:
378/432 + 168/432 = 378 + 168/432 = 546/432 - 546/432 simplified gives 91/72
- So, 42/48 + 21/54 = 91/72
In mixed form: 119/72
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