Answers

Add 60/8 and 81/90

1^st number: 7 4/8, 2^nd number: 81/90

60/8 + 81/90 is 42/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 8 × 45 = 360,
   60/8 = 60 × 45/8 × 45 = 2700/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   81/90 = 81 × 4/90 × 4 = 324/360
4. Add the two like fractions:
   2700/360 + 324/360 = 2700 + 324/360 = 3024/360
5. 3024/360 simplified gives 42/5
6. So, 60/8 + 81/90 = 42/5
   In mixed form: 82/5

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