Answers

Add 75/40 and 90/42

1^st number: 1 35/40, 2^nd number: 2 6/42

75/40 + 90/42 is 225/56.

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,
   75/40 = 75 × 21/40 × 21 = 1575/840
3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
   90/42 = 90 × 20/42 × 20 = 1800/840
4. Add the two like fractions:
   1575/840 + 1800/840 = 1575 + 1800/840 = 3375/840
5. 3375/840 simplified gives 225/56
6. So, 75/40 + 90/42 = 225/56
   In mixed form: 41/56

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