Add 90/15 and 81/18
1st number: 6 0/15, 2nd number: 4 9/18
90/15 + 81/18 is 21/2.
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,
90/15 = 90 × 6/15 × 6 = 540/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Add the two like fractions:
540/90 + 405/90 = 540 + 405/90 = 945/90 - 945/90 simplified gives 21/2
- So, 90/15 + 81/18 = 21/2
In mixed form: 101/2
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