Answers

Add 90/21 and 25/42

1^st number: 4 6/21, 2^nd number: 25/42

90/21 + 25/42 is 205/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 42 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   90/21 = 90 × 2/21 × 2 = 180/42
3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
   25/42 = 25 × 1/42 × 1 = 25/42
4. Add the two like fractions:
   180/42 + 25/42 = 180 + 25/42 = 205/42
5. So, 90/21 + 25/42 = 205/42
   In mixed form: 437/42

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