$\"\"$

The equation is $\"\"$ .

Solve the equation $\"\"$ for b.

Subtract $\"\"$ from each side.

$\"\"$

$\"\"$ . $\"\"$

Multiply each side by 3.

$\"\"$

$\"\"$ .

To check the solution, substitute the value of $\"\"$ in the original equation.

$\"\"$

$\"\"$ .

The above statement is true, so the value of $\"\"$ is the solution of original equation. $\"\"$

The value of $\"\"$ .