Subtract 40/80 from 3/10
3/10 - 40/80 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
3/10 = 3 × 8/10 × 8 = 24/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
40/80 = 40 × 1/80 × 1 = 40/80 - Subtract the two like fractions:
24/80 - 40/80 = 24 - 40/80 = -16/80 - After reducing the fraction, the answer is -1/5
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