Subtract 84/10 from 40/20
1st number: 2 0/20, 2nd number: 8 4/10
40/20 - 84/10 is -32/5.
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,
40/20 = 40 × 1/20 × 1 = 40/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
84/10 = 84 × 2/10 × 2 = 168/20 - Subtract the two like fractions:
40/20 - 168/20 = 40 - 168/20 = -128/20 - After reducing the fraction, the answer is -32/5
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