Subtract 30/84 from 5/80
5/80 - 30/84 is -33/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
5/80 = 5 × 21/80 × 21 = 105/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
30/84 = 30 × 20/84 × 20 = 600/1680 - Subtract the two like fractions:
105/1680 - 600/1680 = 105 - 600/1680 = -495/1680 - After reducing the fraction, the answer is -33/112
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