Subtract 4/10 from 6/42, Solve 6/42

Subtract 4/10 from 6/42

6/42 - 4/10 is -9/35.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
6/42 = 6 × 5/42 × 5 = 30/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
4/10 = 4 × 21/10 × 21 = 84/210
Subtract the two like fractions:
30/210 - 84/210 = 30 - 84/210 = -54/210
After reducing the fraction, the answer is -9/35

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