Add 28/18 and 98/20
1st number: 1 10/18, 2nd number: 4 18/20
28/18 + 98/20 is 581/90.
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,
28/18 = 28 × 10/18 × 10 = 280/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
98/20 = 98 × 9/20 × 9 = 882/180 - Add the two like fractions:
280/180 + 882/180 = 280 + 882/180 = 1162/180 - 1162/180 simplified gives 581/90
- So, 28/18 + 98/20 = 581/90
In mixed form: 641/90
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