Add 72/15 and 81/18
1st number: 4 12/15, 2nd number: 4 9/18
72/15 + 81/18 is 93/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
72/15 = 72 × 6/15 × 6 = 432/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Add the two like fractions:
432/90 + 405/90 = 432 + 405/90 = 837/90 - 837/90 simplified gives 93/10
- So, 72/15 + 81/18 = 93/10
In mixed form: 93/10
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