$\"\"$ $\"\"$

The expression is $\"\"$ .

According to multiplication property of equality: Multiply each side by 3.

$\"\"$

$\"\"$ (Cancel common terms)

$\"\"$ (Multiply: $\"\"$ ) $\"\"$

Check:

Check the solution by substituting $\"\"$ in the original equation.

$\"\"$

$\"\"$ (Cancel common terms)

15 = 15 (Multiply: $\"\"$ ) $\"\"$

The value of $\"\"$ .