Subtract 40/70 from 25/75
25/75 - 40/70 is -5/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 70 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
25/75 = 25 × 14/75 × 14 = 350/1050 - Likewise, for the 2nd fraction, since 70 × 15 = 1050,
40/70 = 40 × 15/70 × 15 = 600/1050 - Subtract the two like fractions:
350/1050 - 600/1050 = 350 - 600/1050 = -250/1050 - After reducing the fraction, the answer is -5/21
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