Add 72/54 and 54/42
1st number: 1 18/54, 2nd number: 1 12/42
72/54 + 54/42 is 55/21.
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,
72/54 = 72 × 7/54 × 7 = 504/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
54/42 = 54 × 9/42 × 9 = 486/378 - Add the two like fractions:
504/378 + 486/378 = 504 + 486/378 = 990/378 - 990/378 simplified gives 55/21
- So, 72/54 + 54/42 = 55/21
In mixed form: 213/21
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