Answers

Add 90/40 and 25/42

1^st number: 2 10/40, 2^nd number: 25/42

90/40 + 25/42 is 239/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 42 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   90/40 = 90 × 21/40 × 21 = 1890/840
3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
   25/42 = 25 × 20/42 × 20 = 500/840
4. Add the two like fractions:
   1890/840 + 500/840 = 1890 + 500/840 = 2390/840
5. 2390/840 simplified gives 239/84
6. So, 90/40 + 25/42 = 239/84
   In mixed form: 271/84

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