Answers

Add 45/42 and 40/72

1^st number: 1 3/42, 2^nd number: 40/72

45/42 + 40/72 is 205/126.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   45/42 = 45 × 12/42 × 12 = 540/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   40/72 = 40 × 7/72 × 7 = 280/504
4. Add the two like fractions:
   540/504 + 280/504 = 540 + 280/504 = 820/504
5. 820/504 simplified gives 205/126
6. So, 45/42 + 40/72 = 205/126
   In mixed form: 179/126

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