Add 72/16 and 21/28
1st number: 4 8/16, 2nd number: 21/28
72/16 + 21/28 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 28 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 16 × 7 = 112,
72/16 = 72 × 7/16 × 7 = 504/112 - Likewise, for the 2nd fraction, since 28 × 4 = 112,
21/28 = 21 × 4/28 × 4 = 84/112 - Add the two like fractions:
504/112 + 84/112 = 504 + 84/112 = 588/112 - 588/112 simplified gives 21/4
- So, 72/16 + 21/28 = 21/4
In mixed form: 51/4
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