Subtract 40/16 from 7/21
1st number: 7/21, 2nd number: 2 8/16
7/21 - 40/16 is -13/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
7/21 = 7 × 16/21 × 16 = 112/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
40/16 = 40 × 21/16 × 21 = 840/336 - Subtract the two like fractions:
112/336 - 840/336 = 112 - 840/336 = -728/336 - After reducing the fraction, the answer is -13/6
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