Subtract 4/12 from 15/70
15/70 - 4/12 is -5/42.
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,
15/70 = 15 × 6/70 × 6 = 90/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
4/12 = 4 × 35/12 × 35 = 140/420 - Subtract the two like fractions:
90/420 - 140/420 = 90 - 140/420 = -50/420 - After reducing the fraction, the answer is -5/42
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