Subtract 72/9 from 14/40, Solve 14/40

Subtract 72/9 from 14/40

1^st number: 14/40, 2^nd number: 8 0/9

14/40 - 72/9 is -153/20.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 40 × 9 = 360,
14/40 = 14 × 9/40 × 9 = 126/360
Likewise, for the 2nd fraction, since 9 × 40 = 360,
72/9 = 72 × 40/9 × 40 = 2880/360
Subtract the two like fractions:
126/360 - 2880/360 = 126 - 2880/360 = -2754/360
After reducing the fraction, the answer is -153/20

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