Question

1/2 + 1/3 - 1/4 =

• A. 4/13
• B. 7/12
• C. 5/8
• D. 9/12

Answer 1

Answer:

B. 7/12

$\frac{1}{2} + \frac{1}{3} - \frac{1}{4}$

$\text{LCM of 2, 3, 4 is } 12$

$\frac{1}{2} = \frac{6}{12}, \quad \frac{1}{3} = \frac{4}{12}, \quad \frac{1}{4} = \frac{3}{12}$

$\frac{6}{12} + \frac{4}{12} - \frac{3}{12} = \frac{6 + 4 - 3}{12} = \frac{7}{12}$

$\text{Answer: } \frac{7}{12}$