Subtract 42/50 from 8/10
8/10 - 42/50 is -1/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 50 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 10 × 5 = 50,
8/10 = 8 × 5/10 × 5 = 40/50 - Likewise, for the 2nd fraction, since 50 × 1 = 50,
42/50 = 42 × 1/50 × 1 = 42/50 - Subtract the two like fractions:
40/50 - 42/50 = 40 - 42/50 = -2/50 - After reducing the fraction, the answer is -1/25
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