Answers

Add 9/72 and 80/40

1^st number: 9/72, 2^nd number: 2 0/40

9/72 + 80/40 is 17/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   9/72 = 9 × 5/72 × 5 = 45/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   80/40 = 80 × 9/40 × 9 = 720/360
4. Add the two like fractions:
   45/360 + 720/360 = 45 + 720/360 = 765/360
5. 765/360 simplified gives 17/8
6. So, 9/72 + 80/40 = 17/8
   In mixed form: 21/8

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