Add 81/45 and 35/20
1st number: 1 36/45, 2nd number: 1 15/20
81/45 + 35/20 is 71/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
81/45 = 81 × 4/45 × 4 = 324/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
35/20 = 35 × 9/20 × 9 = 315/180 - Add the two like fractions:
324/180 + 315/180 = 324 + 315/180 = 639/180 - 639/180 simplified gives 71/20
- So, 81/45 + 35/20 = 71/20
In mixed form: 311/20
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