Answers

Add 48/40 and 7/81

1^st number: 1 8/40, 2^nd number: 7/81

48/40 + 7/81 is 521/405.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 81 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 40 × 81 = 3240,
   48/40 = 48 × 81/40 × 81 = 3888/3240
3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
   7/81 = 7 × 40/81 × 40 = 280/3240
4. Add the two like fractions:
   3888/3240 + 280/3240 = 3888 + 280/3240 = 4168/3240
5. 4168/3240 simplified gives 521/405
6. So, 48/40 + 7/81 = 521/405
   In mixed form: 1116/405

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