Answers

Subtract 3/30 from 40/42

40/42 - 3/30 is 179/210.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 42 × 5 = 210,
   40/42 = 40 × 5/42 × 5 = 200/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   3/30 = 3 × 7/30 × 7 = 21/210
4. Subtract the two like fractions:
   200/210 - 21/210 = 200 - 21/210 = 179/210

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