Answers

Add 20/45 and 90/64

1^st number: 20/45, 2^nd number: 1 26/64

20/45 + 90/64 is 533/288.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 64 is 2880
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2880
2. For the 1st fraction, since 45 × 64 = 2880,
   20/45 = 20 × 64/45 × 64 = 1280/2880
3. Likewise, for the 2nd fraction, since 64 × 45 = 2880,
   90/64 = 90 × 45/64 × 45 = 4050/2880
4. Add the two like fractions:
   1280/2880 + 4050/2880 = 1280 + 4050/2880 = 5330/2880
5. 5330/2880 simplified gives 533/288
6. So, 20/45 + 90/64 = 533/288
   In mixed form: 1245/288

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