Answers

Add 54/63 and 90/40

1^st number: 54/63, 2^nd number: 2 10/40

54/63 + 90/40 is 87/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 40 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 63 × 40 = 2520,
   54/63 = 54 × 40/63 × 40 = 2160/2520
3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
   90/40 = 90 × 63/40 × 63 = 5670/2520
4. Add the two like fractions:
   2160/2520 + 5670/2520 = 2160 + 5670/2520 = 7830/2520
5. 7830/2520 simplified gives 87/28
6. So, 54/63 + 90/40 = 87/28
   In mixed form: 33/28

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