Add 80/45 and 81/30
1st number: 1 35/45, 2nd number: 2 21/30
80/45 + 81/30 is 403/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
80/45 = 80 × 2/45 × 2 = 160/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
81/30 = 81 × 3/30 × 3 = 243/90 - Add the two like fractions:
160/90 + 243/90 = 160 + 243/90 = 403/90 - So, 80/45 + 81/30 = 403/90
In mixed form: 443/90
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