Subtract 40/70 from 2/5
2/5 - 40/70 is -6/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
2/5 = 2 × 14/5 × 14 = 28/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
40/70 = 40 × 1/70 × 1 = 40/70 - Subtract the two like fractions:
28/70 - 40/70 = 28 - 40/70 = -12/70 - After reducing the fraction, the answer is -6/35
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