Subtract 40/9 from 28/72
1st number: 28/72, 2nd number: 4 4/9
28/72 - 40/9 is -73/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
28/72 = 28 × 1/72 × 1 = 28/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
40/9 = 40 × 8/9 × 8 = 320/72 - Subtract the two like fractions:
28/72 - 320/72 = 28 - 320/72 = -292/72 - After reducing the fraction, the answer is -73/18
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