Subtract 49/56 from 42/80
42/80 - 49/56 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 56 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
42/80 = 42 × 7/80 × 7 = 294/560 - Likewise, for the 2nd fraction, since 56 × 10 = 560,
49/56 = 49 × 10/56 × 10 = 490/560 - Subtract the two like fractions:
294/560 - 490/560 = 294 - 490/560 = -196/560 - After reducing the fraction, the answer is -7/20
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