Answers

Add 90/36 and 45/80

1^st number: 2 18/36, 2^nd number: 45/80

90/36 + 45/80 is 49/16.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 36 × 20 = 720,
   90/36 = 90 × 20/36 × 20 = 1800/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   45/80 = 45 × 9/80 × 9 = 405/720
4. Add the two like fractions:
   1800/720 + 405/720 = 1800 + 405/720 = 2205/720
5. 2205/720 simplified gives 49/16
6. So, 90/36 + 45/80 = 49/16
   In mixed form: 31/16

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