Add 21/3 and 18/72
1st number: 7 0/3, 2nd number: 18/72
21/3 + 18/72 is 29/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 3 × 24 = 72,
21/3 = 21 × 24/3 × 24 = 504/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
18/72 = 18 × 1/72 × 1 = 18/72 - Add the two like fractions:
504/72 + 18/72 = 504 + 18/72 = 522/72 - 522/72 simplified gives 29/4
- So, 21/3 + 18/72 = 29/4
In mixed form: 71/4
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