Add 9/42 and 21/16
1st number: 9/42, 2nd number: 1 5/16
9/42 + 21/16 is 171/112.
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,
9/42 = 9 × 8/42 × 8 = 72/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
21/16 = 21 × 21/16 × 21 = 441/336 - Add the two like fractions:
72/336 + 441/336 = 72 + 441/336 = 513/336 - 513/336 simplified gives 171/112
- So, 9/42 + 21/16 = 171/112
In mixed form: 159/112
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