Subtract 84/50 from 18/21
1st number: 18/21, 2nd number: 1 34/50
18/21 - 84/50 is -144/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
18/21 = 18 × 50/21 × 50 = 900/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
84/50 = 84 × 21/50 × 21 = 1764/1050 - Subtract the two like fractions:
900/1050 - 1764/1050 = 900 - 1764/1050 = -864/1050 - After reducing the fraction, the answer is -144/175
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