Subtract 30/36 from 7/9
7/9 - 30/36 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
7/9 = 7 × 4/9 × 4 = 28/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
30/36 = 30 × 1/36 × 1 = 30/36 - Subtract the two like fractions:
28/36 - 30/36 = 28 - 30/36 = -2/36 - After reducing the fraction, the answer is -1/18
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