Answers

Add 80/90 and 63/64

80/90 + 63/64 is 1079/576.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 64 is 2880
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2880
2. For the 1st fraction, since 90 × 32 = 2880,
   80/90 = 80 × 32/90 × 32 = 2560/2880
3. Likewise, for the 2nd fraction, since 64 × 45 = 2880,
   63/64 = 63 × 45/64 × 45 = 2835/2880
4. Add the two like fractions:
   2560/2880 + 2835/2880 = 2560 + 2835/2880 = 5395/2880
5. 5395/2880 simplified gives 1079/576
6. So, 80/90 + 63/64 = 1079/576
   In mixed form: 1503/576

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