Subtract 1/5 from 5/42
5/42 - 1/5 is -17/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
5/42 = 5 × 5/42 × 5 = 25/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
1/5 = 1 × 42/5 × 42 = 42/210 - Subtract the two like fractions:
25/210 - 42/210 = 25 - 42/210 = -17/210
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