Answers

Subtract 3/70 from 18/63

18/63 - 3/70 is 17/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   18/63 = 18 × 10/63 × 10 = 180/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   3/70 = 3 × 9/70 × 9 = 27/630
4. Subtract the two like fractions:
   180/630 - 27/630 = 180 - 27/630 = 153/630
5. After reducing the fraction, the answer is 17/70

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