Add 81/2 and 63/42
1st number: 40 1/2, 2nd number: 1 21/42
81/2 + 63/42 is 42/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
81/2 = 81 × 21/2 × 21 = 1701/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
63/42 = 63 × 1/42 × 1 = 63/42 - Add the two like fractions:
1701/42 + 63/42 = 1701 + 63/42 = 1764/42 - 1764/42 simplified gives 42/1
- So, 81/2 + 63/42 = 42/1
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