Add 40/21 and 72/16
1st number: 1 19/21, 2nd number: 4 8/16
40/21 + 72/16 is 269/42.
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,
40/21 = 40 × 16/21 × 16 = 640/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
72/16 = 72 × 21/16 × 21 = 1512/336 - Add the two like fractions:
640/336 + 1512/336 = 640 + 1512/336 = 2152/336 - 2152/336 simplified gives 269/42
- So, 40/21 + 72/16 = 269/42
In mixed form: 617/42
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