Subtract 12/20 from 32/70
32/70 - 12/20 is -1/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
32/70 = 32 × 2/70 × 2 = 64/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Subtract the two like fractions:
64/140 - 84/140 = 64 - 84/140 = -20/140 - After reducing the fraction, the answer is -1/7
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