Subtract 9/15 from 28/56
28/56 - 9/15 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
28/56 = 28 × 15/56 × 15 = 420/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
9/15 = 9 × 56/15 × 56 = 504/840 - Subtract the two like fractions:
420/840 - 504/840 = 420 - 504/840 = -84/840 - After reducing the fraction, the answer is -1/10
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