Subtract 12/72 from 20/35
20/35 - 12/72 is 17/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 35 × 72 = 2520,
20/35 = 20 × 72/35 × 72 = 1440/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
12/72 = 12 × 35/72 × 35 = 420/2520 - Subtract the two like fractions:
1440/2520 - 420/2520 = 1440 - 420/2520 = 1020/2520 - After reducing the fraction, the answer is 17/42
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