Answers

Add 63/8 and 80/90

1^st number: 7 7/8, 2^nd number: 80/90

63/8 + 80/90 is 631/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 8 × 45 = 360,
   63/8 = 63 × 45/8 × 45 = 2835/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   80/90 = 80 × 4/90 × 4 = 320/360
4. Add the two like fractions:
   2835/360 + 320/360 = 2835 + 320/360 = 3155/360
5. 3155/360 simplified gives 631/72
6. So, 63/8 + 80/90 = 631/72
   In mixed form: 855/72

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