Subtract 20/84 from 3/70
3/70 - 20/84 is -41/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
3/70 = 3 × 6/70 × 6 = 18/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420 - Subtract the two like fractions:
18/420 - 100/420 = 18 - 100/420 = -82/420 - After reducing the fraction, the answer is -41/210
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