Add 72/21 and 45/16
1st number: 3 9/21, 2nd number: 2 13/16
72/21 + 45/16 is 699/112.
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,
45/16 = 45 × 21/16 × 21 = 945/336 - Add the two like fractions:
1152/336 + 945/336 = 1152 + 945/336 = 2097/336 - 2097/336 simplified gives 699/112
- So, 72/21 + 45/16 = 699/112
In mixed form: 627/112
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