Answers

Add 64/90 and 63/70

64/90 + 63/70 is 29/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   64/90 = 64 × 7/90 × 7 = 448/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   63/70 = 63 × 9/70 × 9 = 567/630
4. Add the two like fractions:
   448/630 + 567/630 = 448 + 567/630 = 1015/630
5. 1015/630 simplified gives 29/18
6. So, 64/90 + 63/70 = 29/18
   In mixed form: 111/18

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