Subtract 7/9 from 40/72
40/72 - 7/9 is -2/9.
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,
40/72 = 40 × 1/72 × 1 = 40/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
7/9 = 7 × 8/9 × 8 = 56/72 - Subtract the two like fractions:
40/72 - 56/72 = 40 - 56/72 = -16/72 - After reducing the fraction, the answer is -2/9
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