Answers

Subtract 40/70 from 10/63

10/63 - 40/70 is -26/63.

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,
   10/63 = 10 × 10/63 × 10 = 100/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   40/70 = 40 × 9/70 × 9 = 360/630
4. Subtract the two like fractions:
   100/630 - 360/630 = 100 - 360/630 = -260/630
5. After reducing the fraction, the answer is -26/63

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