Subtract 1/35 from 20/12, Solve 1 8/12

Subtract 1/35 from 20/12

1^st number: 1 8/12, 2^nd number: 1/35

20/12 - 1/35 is 172/105.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
20/12 = 20 × 35/12 × 35 = 700/420
Likewise, for the 2nd fraction, since 35 × 12 = 420,
1/35 = 1 × 12/35 × 12 = 12/420
Subtract the two like fractions:
700/420 - 12/420 = 700 - 12/420 = 688/420
After reducing the fraction, the answer is 172/105
In mixed form: 167/105

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