Answers

Add 40/30 and 90/72

1^st number: 1 10/30, 2^nd number: 1 18/72

40/30 + 90/72 is 31/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 30 × 12 = 360,
   40/30 = 40 × 12/30 × 12 = 480/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   90/72 = 90 × 5/72 × 5 = 450/360
4. Add the two like fractions:
   480/360 + 450/360 = 480 + 450/360 = 930/360
5. 930/360 simplified gives 31/12
6. So, 40/30 + 90/72 = 31/12
   In mixed form: 27/12

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