Answers

Add 70/45 and 42/80

1^st number: 1 25/45, 2^nd number: 42/80

70/45 + 42/80 is 749/360.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   70/45 = 70 × 16/45 × 16 = 1120/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   42/80 = 42 × 9/80 × 9 = 378/720
4. Add the two like fractions:
   1120/720 + 378/720 = 1120 + 378/720 = 1498/720
5. 1498/720 simplified gives 749/360
6. So, 70/45 + 42/80 = 749/360
   In mixed form: 229/360

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