Subtract 4/21 from 40/50
40/50 - 4/21 is 64/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
40/50 = 40 × 21/50 × 21 = 840/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
4/21 = 4 × 50/21 × 50 = 200/1050 - Subtract the two like fractions:
840/1050 - 200/1050 = 840 - 200/1050 = 640/1050 - After reducing the fraction, the answer is 64/105
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