Answers

Add 42/45 and 84/72

1^st number: 42/45, 2^nd number: 1 12/72

42/45 + 84/72 is 21/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 45 × 8 = 360,
   42/45 = 42 × 8/45 × 8 = 336/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   84/72 = 84 × 5/72 × 5 = 420/360
4. Add the two like fractions:
   336/360 + 420/360 = 336 + 420/360 = 756/360
5. 756/360 simplified gives 21/10
6. So, 42/45 + 84/72 = 21/10
   In mixed form: 21/10

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