Add 81/18 and 12/90
1st number: 4 9/18, 2nd number: 12/90
81/18 + 12/90 is 139/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
12/90 = 12 × 1/90 × 1 = 12/90 - Add the two like fractions:
405/90 + 12/90 = 405 + 12/90 = 417/90 - 417/90 simplified gives 139/30
- So, 81/18 + 12/90 = 139/30
In mixed form: 419/30
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