Subtract 45/25 from 18/30, Solve 18/30

Subtract 45/25 from 18/30

1^st number: 18/30, 2^nd number: 1 20/25

18/30 - 45/25 is -6/5.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 25 is 150

Next, find the equivalent fraction of both fractional numbers with denominator 150
For the 1st fraction, since 30 × 5 = 150,
18/30 = 18 × 5/30 × 5 = 90/150
Likewise, for the 2nd fraction, since 25 × 6 = 150,
45/25 = 45 × 6/25 × 6 = 270/150
Subtract the two like fractions:
90/150 - 270/150 = 90 - 270/150 = -180/150
After reducing the fraction, the answer is -6/5

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