Question

$\frac1x+\frac1{2x}+\frac1{4x}=1$

ആയാൽ   x=?

• A. 7/2
• B. 7/4
• C. 4/7
• D. 2/7

Answer 1

Answer:

B. 7/4

$\frac1x+\frac1{2x}+\frac1{4x}=1$

$\frac{4+2+1}{4x}=1$

$\frac7{4x}=1$

x=7/4