Answers

Add 90/20 and 84/18

1^st number: 4 10/20, 2^nd number: 4 12/18

90/20 + 84/18 is 55/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 18 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   90/20 = 90 × 9/20 × 9 = 810/180
3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
   84/18 = 84 × 10/18 × 10 = 840/180
4. Add the two like fractions:
   810/180 + 840/180 = 810 + 840/180 = 1650/180
5. 1650/180 simplified gives 55/6
6. So, 90/20 + 84/18 = 55/6
   In mixed form: 91/6

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