Add 1/2 and 81/90
1/2 + 81/90 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
1/2 = 1 × 45/2 × 45 = 45/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Add the two like fractions:
45/90 + 81/90 = 45 + 81/90 = 126/90 - 126/90 simplified gives 7/5
- So, 1/2 + 81/90 = 7/5
In mixed form: 12/5
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