Answers

Subtract 48/90 from 6/42

6/42 - 48/90 is -41/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   6/42 = 6 × 15/42 × 15 = 90/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   48/90 = 48 × 7/90 × 7 = 336/630
4. Subtract the two like fractions:
   90/630 - 336/630 = 90 - 336/630 = -246/630
5. After reducing the fraction, the answer is -41/105

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