Answers

Add 90/4 and 80/45

1^st number: 22 2/4, 2^nd number: 1 35/45

90/4 + 80/45 is 437/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 4 × 45 = 180,
   90/4 = 90 × 45/4 × 45 = 4050/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   80/45 = 80 × 4/45 × 4 = 320/180
4. Add the two like fractions:
   4050/180 + 320/180 = 4050 + 320/180 = 4370/180
5. 4370/180 simplified gives 437/18
6. So, 90/4 + 80/45 = 437/18
   In mixed form: 245/18

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