Subtract 45/25 from 1/18, Solve 1/18

Subtract 45/25 from 1/18

1^st number: 1/18, 2^nd number: 1 20/25

1/18 - 45/25 is -157/90.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 25 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 25 × 18 = 450,
45/25 = 45 × 18/25 × 18 = 810/450
Subtract the two like fractions:
25/450 - 810/450 = 25 - 810/450 = -785/450
After reducing the fraction, the answer is -157/90

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