Answers

Add 42/8 and 72/45

1^st number: 5 2/8, 2^nd number: 1 27/45

42/8 + 72/45 is 137/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 45 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 8 × 45 = 360,
   42/8 = 42 × 45/8 × 45 = 1890/360
3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
   72/45 = 72 × 8/45 × 8 = 576/360
4. Add the two like fractions:
   1890/360 + 576/360 = 1890 + 576/360 = 2466/360
5. 2466/360 simplified gives 137/20
6. So, 42/8 + 72/45 = 137/20
   In mixed form: 617/20

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