Subtract 40/80 from 7/28
7/28 - 40/80 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
7/28 = 7 × 20/28 × 20 = 140/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
40/80 = 40 × 7/80 × 7 = 280/560 - Subtract the two like fractions:
140/560 - 280/560 = 140 - 280/560 = -140/560 - After reducing the fraction, the answer is -1/4
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