Subtract 15/32 from 21/18, Solve 1 3/18

Subtract 15/32 from 21/18

1^st number: 1 3/18, 2^nd number: 15/32

21/18 - 15/32 is 67/96.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 32 is 288

Next, find the equivalent fraction of both fractional numbers with denominator 288
For the 1st fraction, since 18 × 16 = 288,
21/18 = 21 × 16/18 × 16 = 336/288
Likewise, for the 2nd fraction, since 32 × 9 = 288,
15/32 = 15 × 9/32 × 9 = 135/288
Subtract the two like fractions:
336/288 - 135/288 = 336 - 135/288 = 201/288
After reducing the fraction, the answer is 67/96

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