Subtract 90/50 from 12/21
1st number: 12/21, 2nd number: 1 40/50
12/21 - 90/50 is -43/35.
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,
12/21 = 12 × 50/21 × 50 = 600/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
90/50 = 90 × 21/50 × 21 = 1890/1050 - Subtract the two like fractions:
600/1050 - 1890/1050 = 600 - 1890/1050 = -1290/1050 - After reducing the fraction, the answer is -43/35
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