Add 30/20 and 18/90
1st number: 1 10/20, 2nd number: 18/90
30/20 + 18/90 is 17/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
18/90 = 18 × 2/90 × 2 = 36/180 - Add the two like fractions:
270/180 + 36/180 = 270 + 36/180 = 306/180 - 306/180 simplified gives 17/10
- So, 30/20 + 18/90 = 17/10
In mixed form: 17/10
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