Subtract 5/35 from 12/9, Solve 1 3/9

Subtract 5/35 from 12/9

1^st number: 1 3/9, 2^nd number: 5/35

12/9 - 5/35 is 25/21.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 35 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 9 × 35 = 315,
12/9 = 12 × 35/9 × 35 = 420/315
Likewise, for the 2nd fraction, since 35 × 9 = 315,
5/35 = 5 × 9/35 × 9 = 45/315
Subtract the two like fractions:
420/315 - 45/315 = 420 - 45/315 = 375/315
After reducing the fraction, the answer is 25/21
In mixed form: 14/21

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