Subtract 80/18 from 15/25, Solve 15/25

Subtract 80/18 from 15/25

1^st number: 15/25, 2^nd number: 4 8/18

15/25 - 80/18 is -173/45.

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,
15/25 = 15 × 18/25 × 18 = 270/450
Likewise, for the 2nd fraction, since 18 × 25 = 450,
80/18 = 80 × 25/18 × 25 = 2000/450
Subtract the two like fractions:
270/450 - 2000/450 = 270 - 2000/450 = -1730/450
After reducing the fraction, the answer is -173/45

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