Question

1/2 = 1/a + b/c make b the subject​

Answer 1

Answer:

b = $\frac{ac-2c}{2a}$

Step-by-step explanation:

Given

$\frac{1}{2}$ = $\frac{1}{a}$ + $\frac{b}{c}$

Multiply through by 2ac to clear the fractions

ac = 2c + 2ab ( subtract 2c from both sides )

ac- 2c = 2ab ( divide both sides by 2a )

$\frac{ac-2c}{2a}$ = b