Answers

Add 72/9 and 90/40

1^st number: 8 0/9, 2^nd number: 2 10/40

72/9 + 90/40 is 41/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 9 × 40 = 360,
   72/9 = 72 × 40/9 × 40 = 2880/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   90/40 = 90 × 9/40 × 9 = 810/360
4. Add the two like fractions:
   2880/360 + 810/360 = 2880 + 810/360 = 3690/360
5. 3690/360 simplified gives 41/4
6. So, 72/9 + 90/40 = 41/4
   In mixed form: 101/4

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