Subtract 8/9 from 7/30
7/30 - 8/9 is -59/90.
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,
7/30 = 7 × 3/30 × 3 = 21/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
8/9 = 8 × 10/9 × 10 = 80/90 - Subtract the two like fractions:
21/90 - 80/90 = 21 - 80/90 = -59/90
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