Subtract 7/9 from 18/30
18/30 - 7/9 is -8/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
18/30 = 18 × 3/30 × 3 = 54/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
7/9 = 7 × 10/9 × 10 = 70/90 - Subtract the two like fractions:
54/90 - 70/90 = 54 - 70/90 = -16/90 - After reducing the fraction, the answer is -8/45
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