Add 40/21 and 54/12
1st number: 1 19/21, 2nd number: 4 6/12
40/21 + 54/12 is 269/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
40/21 = 40 × 4/21 × 4 = 160/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
54/12 = 54 × 7/12 × 7 = 378/84 - Add the two like fractions:
160/84 + 378/84 = 160 + 378/84 = 538/84 - 538/84 simplified gives 269/42
- So, 40/21 + 54/12 = 269/42
In mixed form: 617/42
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