Answers

Subtract 7/70 from 2/63

2/63 - 7/70 is -43/630.

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,
   2/63 = 2 × 10/63 × 10 = 20/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   7/70 = 7 × 9/70 × 9 = 63/630
4. Subtract the two like fractions:
   20/630 - 63/630 = 20 - 63/630 = -43/630

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