Subtract 40/50 from 21/27
21/27 - 40/50 is -1/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 50 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 27 × 50 = 1350,
21/27 = 21 × 50/27 × 50 = 1050/1350 - Likewise, for the 2nd fraction, since 50 × 27 = 1350,
40/50 = 40 × 27/50 × 27 = 1080/1350 - Subtract the two like fractions:
1050/1350 - 1080/1350 = 1050 - 1080/1350 = -30/1350 - After reducing the fraction, the answer is -1/45
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