Subtract 98/90 from 28/75, Solve 28/75

Subtract 98/90 from 28/75

1^st number: 28/75, 2^nd number: 1 8/90

28/75 - 98/90 is -161/225.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 75 × 6 = 450,
28/75 = 28 × 6/75 × 6 = 168/450
Likewise, for the 2nd fraction, since 90 × 5 = 450,
98/90 = 98 × 5/90 × 5 = 490/450
Subtract the two like fractions:
168/450 - 490/450 = 168 - 490/450 = -322/450
After reducing the fraction, the answer is -161/225

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