Subtract 20/42 from 84/80
1st number: 1 4/80, 2nd number: 20/42
84/80 - 20/42 is 241/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
84/80 = 84 × 21/80 × 21 = 1764/1680 - Likewise, for the 2nd fraction, since 42 × 40 = 1680,
20/42 = 20 × 40/42 × 40 = 800/1680 - Subtract the two like fractions:
1764/1680 - 800/1680 = 1764 - 800/1680 = 964/1680 - After reducing the fraction, the answer is 241/420
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