Add 18/90 and 80/20
1st number: 18/90, 2nd number: 4 0/20
18/90 + 80/20 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
18/90 = 18 × 2/90 × 2 = 36/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
80/20 = 80 × 9/20 × 9 = 720/180 - Add the two like fractions:
36/180 + 720/180 = 36 + 720/180 = 756/180 - 756/180 simplified gives 21/5
- So, 18/90 + 80/20 = 21/5
In mixed form: 41/5
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