Subtract 30/36 from 18/30
18/30 - 30/36 is -7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
18/30 = 18 × 6/30 × 6 = 108/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
30/36 = 30 × 5/36 × 5 = 150/180 - Subtract the two like fractions:
108/180 - 150/180 = 108 - 150/180 = -42/180 - After reducing the fraction, the answer is -7/30
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