Answers

Add 42/7 and 45/80

1^st number: 6 0/7, 2^nd number: 45/80

42/7 + 45/80 is 105/16.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 7 × 80 = 560,
   42/7 = 42 × 80/7 × 80 = 3360/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   45/80 = 45 × 7/80 × 7 = 315/560
4. Add the two like fractions:
   3360/560 + 315/560 = 3360 + 315/560 = 3675/560
5. 3675/560 simplified gives 105/16
6. So, 42/7 + 45/80 = 105/16
   In mixed form: 69/16

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