Add 1/21 and 72/16
1st number: 1/21, 2nd number: 4 8/16
1/21 + 72/16 is 191/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
1/21 = 1 × 16/21 × 16 = 16/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
72/16 = 72 × 21/16 × 21 = 1512/336 - Add the two like fractions:
16/336 + 1512/336 = 16 + 1512/336 = 1528/336 - 1528/336 simplified gives 191/42
- So, 1/21 + 72/16 = 191/42
In mixed form: 423/42
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