Subtract 10/9 from 25/40, Solve 25/40

Subtract 10/9 from 25/40

1^st number: 25/40, 2^nd number: 1 1/9

25/40 - 10/9 is -35/72.

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,
25/40 = 25 × 9/40 × 9 = 225/360
Likewise, for the 2nd fraction, since 9 × 40 = 360,
10/9 = 10 × 40/9 × 40 = 400/360
Subtract the two like fractions:
225/360 - 400/360 = 225 - 400/360 = -175/360
After reducing the fraction, the answer is -35/72

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