Subtract 42/10 from 20/80
1st number: 20/80, 2nd number: 4 2/10
20/80 - 42/10 is -79/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
20/80 = 20 × 1/80 × 1 = 20/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
42/10 = 42 × 8/10 × 8 = 336/80 - Subtract the two like fractions:
20/80 - 336/80 = 20 - 336/80 = -316/80 - After reducing the fraction, the answer is -79/20
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