Subtract 28/32 from 4/18, Solve 4/18

Subtract 28/32 from 4/18

4/18 - 28/32 is -47/72.

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,
4/18 = 4 × 16/18 × 16 = 64/288
Likewise, for the 2nd fraction, since 32 × 9 = 288,
28/32 = 28 × 9/32 × 9 = 252/288
Subtract the two like fractions:
64/288 - 252/288 = 64 - 252/288 = -188/288
After reducing the fraction, the answer is -47/72

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