Subtract 7/10 from 4/20
4/20 - 7/10 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
4/20 = 4 × 1/20 × 1 = 4/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
7/10 = 7 × 2/10 × 2 = 14/20 - Subtract the two like fractions:
4/20 - 14/20 = 4 - 14/20 = -10/20 - After reducing the fraction, the answer is -1/2
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