Subtract 80/27 from 45/90, Solve 45/90

Subtract 80/27 from 45/90

1^st number: 45/90, 2^nd number: 2 26/27

45/90 - 80/27 is -133/54.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 90 × 3 = 270,
45/90 = 45 × 3/90 × 3 = 135/270
Likewise, for the 2nd fraction, since 27 × 10 = 270,
80/27 = 80 × 10/27 × 10 = 800/270
Subtract the two like fractions:
135/270 - 800/270 = 135 - 800/270 = -665/270
After reducing the fraction, the answer is -133/54

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