Add 80/20 and 45/18
1st number: 4 0/20, 2nd number: 2 9/18
80/20 + 45/18 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
80/20 = 80 × 9/20 × 9 = 720/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
45/18 = 45 × 10/18 × 10 = 450/180 - Add the two like fractions:
720/180 + 450/180 = 720 + 450/180 = 1170/180 - 1170/180 simplified gives 13/2
- So, 80/20 + 45/18 = 13/2
In mixed form: 61/2
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