Add 54/12 and 42/7
1st number: 4 6/12, 2nd number: 6 0/7
54/12 + 42/7 is 21/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
54/12 = 54 × 7/12 × 7 = 378/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
42/7 = 42 × 12/7 × 12 = 504/84 - Add the two like fractions:
378/84 + 504/84 = 378 + 504/84 = 882/84 - 882/84 simplified gives 21/2
- So, 54/12 + 42/7 = 21/2
In mixed form: 101/2
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