Answers

Add 70/15 and 90/80

1^st number: 4 10/15, 2^nd number: 1 10/80

70/15 + 90/80 is 139/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 15 × 16 = 240,
   70/15 = 70 × 16/15 × 16 = 1120/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   90/80 = 90 × 3/80 × 3 = 270/240
4. Add the two like fractions:
   1120/240 + 270/240 = 1120 + 270/240 = 1390/240
5. 1390/240 simplified gives 139/24
6. So, 70/15 + 90/80 = 139/24
   In mixed form: 519/24

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