Add 42/7 and 21/54
1st number: 6 0/7, 2nd number: 21/54
42/7 + 21/54 is 115/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
42/7 = 42 × 54/7 × 54 = 2268/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378 - Add the two like fractions:
2268/378 + 147/378 = 2268 + 147/378 = 2415/378 - 2415/378 simplified gives 115/18
- So, 42/7 + 21/54 = 115/18
In mixed form: 67/18
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