Subtract 10/12 from 40/70
40/70 - 10/12 is -11/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
40/70 = 40 × 6/70 × 6 = 240/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
10/12 = 10 × 35/12 × 35 = 350/420 - Subtract the two like fractions:
240/420 - 350/420 = 240 - 350/420 = -110/420 - After reducing the fraction, the answer is -11/42
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