Subtract 1/21 from 40/8
1st number: 5 0/8, 2nd number: 1/21
40/8 - 1/21 is 104/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
40/8 = 40 × 21/8 × 21 = 840/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
1/21 = 1 × 8/21 × 8 = 8/168 - Subtract the two like fractions:
840/168 - 8/168 = 840 - 8/168 = 832/168 - After reducing the fraction, the answer is 104/21
- In mixed form: 420/21
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