Subtract 20/36 from 12/70
12/70 - 20/36 is -121/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 70 × 18 = 1260,
12/70 = 12 × 18/70 × 18 = 216/1260 - Likewise, for the 2nd fraction, since 36 × 35 = 1260,
20/36 = 20 × 35/36 × 35 = 700/1260 - Subtract the two like fractions:
216/1260 - 700/1260 = 216 - 700/1260 = -484/1260 - After reducing the fraction, the answer is -121/315
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