Answers

Add 75/42 and 9/40

1^st number: 1 33/42, 2^nd number: 9/40

75/42 + 9/40 is 563/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 42 × 20 = 840,
   75/42 = 75 × 20/42 × 20 = 1500/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   9/40 = 9 × 21/40 × 21 = 189/840
4. Add the two like fractions:
   1500/840 + 189/840 = 1500 + 189/840 = 1689/840
5. 1689/840 simplified gives 563/280
6. So, 75/42 + 9/40 = 563/280
   In mixed form: 23/280

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