Add 63/42 and 45/12
1st number: 1 21/42, 2nd number: 3 9/12
63/42 + 45/12 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
63/42 = 63 × 2/42 × 2 = 126/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
45/12 = 45 × 7/12 × 7 = 315/84 - Add the two like fractions:
126/84 + 315/84 = 126 + 315/84 = 441/84 - 441/84 simplified gives 21/4
- So, 63/42 + 45/12 = 21/4
In mixed form: 51/4
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