Answers

Add 42/45 and 84/20

1^st number: 42/45, 2^nd number: 4 4/20

42/45 + 84/20 is 77/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   42/45 = 42 × 4/45 × 4 = 168/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   84/20 = 84 × 9/20 × 9 = 756/180
4. Add the two like fractions:
   168/180 + 756/180 = 168 + 756/180 = 924/180
5. 924/180 simplified gives 77/15
6. So, 42/45 + 84/20 = 77/15
   In mixed form: 52/15

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