Add 81/90 and 54/45
1st number: 81/90, 2nd number: 1 9/45
81/90 + 54/45 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
54/45 = 54 × 2/45 × 2 = 108/90 - Add the two like fractions:
81/90 + 108/90 = 81 + 108/90 = 189/90 - 189/90 simplified gives 21/10
- So, 81/90 + 54/45 = 21/10
In mixed form: 21/10
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Related: 81/90+54/90