Subtract 21/50 from 30/72
30/72 - 21/50 is -1/300.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 50 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
30/72 = 30 × 25/72 × 25 = 750/1800 - Likewise, for the 2nd fraction, since 50 × 36 = 1800,
21/50 = 21 × 36/50 × 36 = 756/1800 - Subtract the two like fractions:
750/1800 - 756/1800 = 750 - 756/1800 = -6/1800 - After reducing the fraction, the answer is -1/300
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