Subtract 90/50 from 21/12
1st number: 1 9/12, 2nd number: 1 40/50
21/12 - 90/50 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 50 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
21/12 = 21 × 25/12 × 25 = 525/300 - Likewise, for the 2nd fraction, since 50 × 6 = 300,
90/50 = 90 × 6/50 × 6 = 540/300 - Subtract the two like fractions:
525/300 - 540/300 = 525 - 540/300 = -15/300 - After reducing the fraction, the answer is -1/20
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