Answers

Subtract 18/63 from 9/10

9/10 - 18/63 is 43/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 10 × 63 = 630,
   9/10 = 9 × 63/10 × 63 = 567/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   18/63 = 18 × 10/63 × 10 = 180/630
4. Subtract the two like fractions:
   567/630 - 180/630 = 567 - 180/630 = 387/630
5. After reducing the fraction, the answer is 43/70

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