Answers

Add 90/72 and 3/40

1^st number: 1 18/72, 2^nd number: 3/40

90/72 + 3/40 is 53/40.

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,
   90/72 = 90 × 5/72 × 5 = 450/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   3/40 = 3 × 9/40 × 9 = 27/360
4. Add the two like fractions:
   450/360 + 27/360 = 450 + 27/360 = 477/360
5. 477/360 simplified gives 53/40
6. So, 90/72 + 3/40 = 53/40
   In mixed form: 113/40

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