Answers

Subtract 10/63 from 70/90

70/90 - 10/63 is 13/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   70/90 = 70 × 7/90 × 7 = 490/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   10/63 = 10 × 10/63 × 10 = 100/630
4. Subtract the two like fractions:
   490/630 - 100/630 = 490 - 100/630 = 390/630
5. After reducing the fraction, the answer is 13/21

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