Add 90/21 and 72/16
1st number: 4 6/21, 2nd number: 4 8/16
90/21 + 72/16 is 123/14.
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,
90/21 = 90 × 16/21 × 16 = 1440/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
72/16 = 72 × 21/16 × 21 = 1512/336 - Add the two like fractions:
1440/336 + 1512/336 = 1440 + 1512/336 = 2952/336 - 2952/336 simplified gives 123/14
- So, 90/21 + 72/16 = 123/14
In mixed form: 811/14
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