Answers

Add 84/72 and 9/90

1^st number: 1 12/72, 2^nd number: 9/90

84/72 + 9/90 is 19/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   84/72 = 84 × 5/72 × 5 = 420/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   9/90 = 9 × 4/90 × 4 = 36/360
4. Add the two like fractions:
   420/360 + 36/360 = 420 + 36/360 = 456/360
5. 456/360 simplified gives 19/15
6. So, 84/72 + 9/90 = 19/15
   In mixed form: 14/15

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