Subtract 12/16 from 20/70
20/70 - 12/16 is -13/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
20/70 = 20 × 8/70 × 8 = 160/560 - Likewise, for the 2nd fraction, since 16 × 35 = 560,
12/16 = 12 × 35/16 × 35 = 420/560 - Subtract the two like fractions:
160/560 - 420/560 = 160 - 420/560 = -260/560 - After reducing the fraction, the answer is -13/28
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