Answers

Add 45/30 and 64/40

1^st number: 1 15/30, 2^nd number: 1 24/40

45/30 + 64/40 is 31/10.

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,
   45/30 = 45 × 4/30 × 4 = 180/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   64/40 = 64 × 3/40 × 3 = 192/120
4. Add the two like fractions:
   180/120 + 192/120 = 180 + 192/120 = 372/120
5. 372/120 simplified gives 31/10
6. So, 45/30 + 64/40 = 31/10
   In mixed form: 31/10

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