Subtract 21/32 from 9/28
9/28 - 21/32 is -75/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 32 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 28 × 8 = 224,
9/28 = 9 × 8/28 × 8 = 72/224 - Likewise, for the 2nd fraction, since 32 × 7 = 224,
21/32 = 21 × 7/32 × 7 = 147/224 - Subtract the two like fractions:
72/224 - 147/224 = 72 - 147/224 = -75/224
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