Subtract 7/20 from 12/9, Solve 1 3/9

Subtract 7/20 from 12/9

1^st number: 1 3/9, 2^nd number: 7/20

12/9 - 7/20 is 59/60.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 9 × 20 = 180,
12/9 = 12 × 20/9 × 20 = 240/180
Likewise, for the 2nd fraction, since 20 × 9 = 180,
7/20 = 7 × 9/20 × 9 = 63/180
Subtract the two like fractions:
240/180 - 63/180 = 240 - 63/180 = 177/180
After reducing the fraction, the answer is 59/60

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