Subtract 20/72 from 4/49
4/49 - 20/72 is -173/882.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 72 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 49 × 72 = 3528,
4/49 = 4 × 72/49 × 72 = 288/3528 - Likewise, for the 2nd fraction, since 72 × 49 = 3528,
20/72 = 20 × 49/72 × 49 = 980/3528 - Subtract the two like fractions:
288/3528 - 980/3528 = 288 - 980/3528 = -692/3528 - After reducing the fraction, the answer is -173/882
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