Add 15/54 and 9/42
15/54 + 9/42 is 31/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
15/54 = 15 × 7/54 × 7 = 105/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
9/42 = 9 × 9/42 × 9 = 81/378 - Add the two like fractions:
105/378 + 81/378 = 105 + 81/378 = 186/378 - 186/378 simplified gives 31/63
- So, 15/54 + 9/42 = 31/63
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