Answers

Add 98/80 and 90/15

1^st number: 1 18/80, 2^nd number: 6 0/15

98/80 + 90/15 is 289/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 15 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 80 × 3 = 240,
   98/80 = 98 × 3/80 × 3 = 294/240
3. Likewise, for the 2nd fraction, since 15 × 16 = 240,
   90/15 = 90 × 16/15 × 16 = 1440/240
4. Add the two like fractions:
   294/240 + 1440/240 = 294 + 1440/240 = 1734/240
5. 1734/240 simplified gives 289/40
6. So, 98/80 + 90/15 = 289/40
   In mixed form: 79/40

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