Subtract 18/50 from 21/12, Solve 1 9/12

Subtract 18/50 from 21/12

1^st number: 1 9/12, 2^nd number: 18/50

21/12 - 18/50 is 139/100.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 50 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 12 × 25 = 300,
21/12 = 21 × 25/12 × 25 = 525/300
Likewise, for the 2nd fraction, since 50 × 6 = 300,
18/50 = 18 × 6/50 × 6 = 108/300
Subtract the two like fractions:
525/300 - 108/300 = 525 - 108/300 = 417/300
After reducing the fraction, the answer is 139/100
In mixed form: 139/100

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