Answers

Add 42/84 and 90/25

1^st number: 42/84, 2^nd number: 3 15/25

42/84 + 90/25 is 41/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 25 is 2100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2100
2. For the 1st fraction, since 84 × 25 = 2100,
   42/84 = 42 × 25/84 × 25 = 1050/2100
3. Likewise, for the 2nd fraction, since 25 × 84 = 2100,
   90/25 = 90 × 84/25 × 84 = 7560/2100
4. Add the two like fractions:
   1050/2100 + 7560/2100 = 1050 + 7560/2100 = 8610/2100
5. 8610/2100 simplified gives 41/10
6. So, 42/84 + 90/25 = 41/10
   In mixed form: 41/10

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