Add 72/21 and 40/16
1st number: 3 9/21, 2nd number: 2 8/16
72/21 + 40/16 is 83/14.
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,
72/21 = 72 × 16/21 × 16 = 1152/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
40/16 = 40 × 21/16 × 21 = 840/336 - Add the two like fractions:
1152/336 + 840/336 = 1152 + 840/336 = 1992/336 - 1992/336 simplified gives 83/14
- So, 72/21 + 40/16 = 83/14
In mixed form: 513/14
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