Subtract 72/45 from 6/8, Solve 6/8 - 1 27/45 as a fraction

Subtract 72/45 from 6/8

1^st number: 6/8, 2^nd number: 1 27/45

6/8 - 72/45 is -17/20.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 45 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 8 × 45 = 360,
6/8 = 6 × 45/8 × 45 = 270/360
Likewise, for the 2nd fraction, since 45 × 8 = 360,
72/45 = 72 × 8/45 × 8 = 576/360
Subtract the two like fractions:
270/360 - 576/360 = 270 - 576/360 = -306/360
After reducing the fraction, the answer is -17/20

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