Subtract 42/70 from 12/75
12/75 - 42/70 is -11/25.
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,
12/75 = 12 × 14/75 × 14 = 168/1050 - Likewise, for the 2nd fraction, since 70 × 15 = 1050,
42/70 = 42 × 15/70 × 15 = 630/1050 - Subtract the two like fractions:
168/1050 - 630/1050 = 168 - 630/1050 = -462/1050 - After reducing the fraction, the answer is -11/25
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