Add 45/42 and 21/54
1st number: 1 3/42, 2nd number: 21/54
45/42 + 21/54 is 92/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
45/42 = 45 × 9/42 × 9 = 405/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378 - Add the two like fractions:
405/378 + 147/378 = 405 + 147/378 = 552/378 - 552/378 simplified gives 92/63
- So, 45/42 + 21/54 = 92/63
In mixed form: 129/63
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