Subtract 20/75 from 10/70
10/70 - 20/75 is -13/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 75 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 70 × 15 = 1050,
10/70 = 10 × 15/70 × 15 = 150/1050 - Likewise, for the 2nd fraction, since 75 × 14 = 1050,
20/75 = 20 × 14/75 × 14 = 280/1050 - Subtract the two like fractions:
150/1050 - 280/1050 = 150 - 280/1050 = -130/1050 - After reducing the fraction, the answer is -13/105
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