Subtract 90/20 from 21/75
1st number: 21/75, 2nd number: 4 10/20
21/75 - 90/20 is -211/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
21/75 = 21 × 4/75 × 4 = 84/300 - Likewise, for the 2nd fraction, since 20 × 15 = 300,
90/20 = 90 × 15/20 × 15 = 1350/300 - Subtract the two like fractions:
84/300 - 1350/300 = 84 - 1350/300 = -1266/300 - After reducing the fraction, the answer is -211/50
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