Subtract 4/12 from 7/70
7/70 - 4/12 is -7/30.
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,
7/70 = 7 × 6/70 × 6 = 42/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
4/12 = 4 × 35/12 × 35 = 140/420 - Subtract the two like fractions:
42/420 - 140/420 = 42 - 140/420 = -98/420 - After reducing the fraction, the answer is -7/30
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