Subtract 30/75 from 1/18, Solve 1/18

Subtract 30/75 from 1/18

1/18 - 30/75 is -31/90.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 75 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 18 × 25 = 450,
1/18 = 1 × 25/18 × 25 = 25/450
Likewise, for the 2nd fraction, since 75 × 6 = 450,
30/75 = 30 × 6/75 × 6 = 180/450
Subtract the two like fractions:
25/450 - 180/450 = 25 - 180/450 = -155/450
After reducing the fraction, the answer is -31/90

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