Add 42/56 and 21/72
42/56 + 21/72 is 25/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
42/56 = 42 × 9/56 × 9 = 378/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Add the two like fractions:
378/504 + 147/504 = 378 + 147/504 = 525/504 - 525/504 simplified gives 25/24
- So, 42/56 + 21/72 = 25/24
In mixed form: 11/24
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