Subtract 49/40 from 12/9, Solve 1 3/9

Subtract 49/40 from 12/9

1^st number: 1 3/9, 2^nd number: 1 9/40

12/9 - 49/40 is 13/120.

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

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 9 × 40 = 360,
12/9 = 12 × 40/9 × 40 = 480/360
Likewise, for the 2nd fraction, since 40 × 9 = 360,
49/40 = 49 × 9/40 × 9 = 441/360
Subtract the two like fractions:
480/360 - 441/360 = 480 - 441/360 = 39/360
After reducing the fraction, the answer is 13/120

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