Subtract 54/80 from 7/15
7/15 - 54/80 is -5/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
7/15 = 7 × 16/15 × 16 = 112/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
54/80 = 54 × 3/80 × 3 = 162/240 - Subtract the two like fractions:
112/240 - 162/240 = 112 - 162/240 = -50/240 - After reducing the fraction, the answer is -5/24
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