Add 63/2 and 84/21
1st number: 31 1/2, 2nd number: 4 0/21
63/2 + 84/21 is 71/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
63/2 = 63 × 21/2 × 21 = 1323/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
84/21 = 84 × 2/21 × 2 = 168/42 - Add the two like fractions:
1323/42 + 168/42 = 1323 + 168/42 = 1491/42 - 1491/42 simplified gives 71/2
- So, 63/2 + 84/21 = 71/2
In mixed form: 351/2
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