Subtract 40/80 from 21/3
1st number: 7 0/3, 2nd number: 40/80
21/3 - 40/80 is 13/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 3 × 80 = 240,
21/3 = 21 × 80/3 × 80 = 1680/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
40/80 = 40 × 3/80 × 3 = 120/240 - Subtract the two like fractions:
1680/240 - 120/240 = 1680 - 120/240 = 1560/240 - After reducing the fraction, the answer is 13/2
- In mixed form: 61/2
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