1/2 + 1/3 - 1/4 = _____?
- 1/6
- 9/12
- 7/12
- None of these
Explanation
To evaluate the expression 1/2 + 1/3 - 1/4, we need to find a common denominator. The least common multiple of 2, 3, and 4 is 12.
1/2 = 6/12
1/3 = 4/12
1/4 = 3/12
Now, let's add and subtract:
6/12 + 4/12 - 3/12
= (6 + 4 - 3)/12
= 7/12
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