Subtract 21/9 from 40/5
1st number: 8 0/5, 2nd number: 2 3/9
40/5 - 21/9 is 17/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
40/5 = 40 × 9/5 × 9 = 360/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
21/9 = 21 × 5/9 × 5 = 105/45 - Subtract the two like fractions:
360/45 - 105/45 = 360 - 105/45 = 255/45 - After reducing the fraction, the answer is 17/3
- In mixed form: 52/3
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