Subtract 21/45 from 8/16
8/16 - 21/45 is 1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
8/16 = 8 × 45/16 × 45 = 360/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
21/45 = 21 × 16/45 × 16 = 336/720 - Subtract the two like fractions:
360/720 - 336/720 = 360 - 336/720 = 24/720 - After reducing the fraction, the answer is 1/30
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