Answers

Add 72/30 and 98/40

1^st number: 2 12/30, 2^nd number: 2 18/40

72/30 + 98/40 is 97/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 30 × 4 = 120,
   72/30 = 72 × 4/30 × 4 = 288/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   98/40 = 98 × 3/40 × 3 = 294/120
4. Add the two like fractions:
   288/120 + 294/120 = 288 + 294/120 = 582/120
5. 582/120 simplified gives 97/20
6. So, 72/30 + 98/40 = 97/20
   In mixed form: 417/20

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