Answers

Add 98/72 and 18/45

1^st number: 1 26/72, 2^nd number: 18/45

98/72 + 18/45 is 317/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 45 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   98/72 = 98 × 5/72 × 5 = 490/360
3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
   18/45 = 18 × 8/45 × 8 = 144/360
4. Add the two like fractions:
   490/360 + 144/360 = 490 + 144/360 = 634/360
5. 634/360 simplified gives 317/180
6. So, 98/72 + 18/45 = 317/180
   In mixed form: 1137/180

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