Subtract 80/18 from 18/25, Solve 18/25

Subtract 80/18 from 18/25

1^st number: 18/25, 2^nd number: 4 8/18

18/25 - 80/18 is -838/225.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 25 × 18 = 450,
18/25 = 18 × 18/25 × 18 = 324/450
Likewise, for the 2nd fraction, since 18 × 25 = 450,
80/18 = 80 × 25/18 × 25 = 2000/450
Subtract the two like fractions:
324/450 - 2000/450 = 324 - 2000/450 = -1676/450
After reducing the fraction, the answer is -838/225

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