Add 72/18 and 20/16
1st number: 4 0/18, 2nd number: 1 4/16
72/18 + 20/16 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
72/18 = 72 × 8/18 × 8 = 576/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
20/16 = 20 × 9/16 × 9 = 180/144 - Add the two like fractions:
576/144 + 180/144 = 576 + 180/144 = 756/144 - 756/144 simplified gives 21/4
- So, 72/18 + 20/16 = 21/4
In mixed form: 51/4
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