Answers

Subtract 63/90 from 2/7

2/7 - 63/90 is -29/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 7 × 90 = 630,
   2/7 = 2 × 90/7 × 90 = 180/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   63/90 = 63 × 7/90 × 7 = 441/630
4. Subtract the two like fractions:
   180/630 - 441/630 = 180 - 441/630 = -261/630
5. After reducing the fraction, the answer is -29/70

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