Add 21/42 and 15/16
21/42 + 15/16 is 23/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
21/42 = 21 × 8/42 × 8 = 168/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
15/16 = 15 × 21/16 × 21 = 315/336 - Add the two like fractions:
168/336 + 315/336 = 168 + 315/336 = 483/336 - 483/336 simplified gives 23/16
- So, 21/42 + 15/16 = 23/16
In mixed form: 17/16
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