Answers

Add 42/40 and 63/45

1^st number: 1 2/40, 2^nd number: 1 18/45

42/40 + 63/45 is 49/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 45 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   42/40 = 42 × 9/40 × 9 = 378/360
3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
   63/45 = 63 × 8/45 × 8 = 504/360
4. Add the two like fractions:
   378/360 + 504/360 = 378 + 504/360 = 882/360
5. 882/360 simplified gives 49/20
6. So, 42/40 + 63/45 = 49/20
   In mixed form: 29/20

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