Answers

Add 96/21 and 40/90

1^st number: 4 12/21, 2^nd number: 40/90

96/21 + 40/90 is 316/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 21 × 30 = 630,
   96/21 = 96 × 30/21 × 30 = 2880/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   40/90 = 40 × 7/90 × 7 = 280/630
4. Add the two like fractions:
   2880/630 + 280/630 = 2880 + 280/630 = 3160/630
5. 3160/630 simplified gives 316/63
6. So, 96/21 + 40/90 = 316/63
   In mixed form: 51/63

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