Answers

Add 80/60 and 70/72

1^st number: 1 20/60, 2^nd number: 70/72

80/60 + 70/72 is 83/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 60 × 6 = 360,
   80/60 = 80 × 6/60 × 6 = 480/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   70/72 = 70 × 5/72 × 5 = 350/360
4. Add the two like fractions:
   480/360 + 350/360 = 480 + 350/360 = 830/360
5. 830/360 simplified gives 83/36
6. So, 80/60 + 70/72 = 83/36
   In mixed form: 211/36

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