Answers

Add 84/4 and 90/45

1^st number: 21 0/4, 2^nd number: 2 0/45

84/4 + 90/45 is 23/1.

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,
   84/4 = 84 × 45/4 × 45 = 3780/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   90/45 = 90 × 4/45 × 4 = 360/180
4. Add the two like fractions:
   3780/180 + 360/180 = 3780 + 360/180 = 4140/180
5. 4140/180 simplified gives 23/1
6. So, 84/4 + 90/45 = 23/1

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