Add 45/18 and 64/20
1st number: 2 9/18, 2nd number: 3 4/20
45/18 + 64/20 is 57/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
45/18 = 45 × 10/18 × 10 = 450/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
64/20 = 64 × 9/20 × 9 = 576/180 - Add the two like fractions:
450/180 + 576/180 = 450 + 576/180 = 1026/180 - 1026/180 simplified gives 57/10
- So, 45/18 + 64/20 = 57/10
In mixed form: 57/10
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