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

The equation is $\"\"$

Apply multiplition property of equality: if $\"\"$

$\"\"$ (Multiply each side by 3)

$\"\"$ (Cancel common terms) \ \

$\"\"$ (Add 3 to each side)

$\"\"$ (Additive inverse property: $\"\"$ )

$\"\"$ (Additive identity property: $\"\"$ )

$\"\"$ (Add: $\"\"$ ) $\"\"$

Check:

Substitutive the value $\"\"$ on original equation

$\"\"$ \ \

$\"\"$ (Subtract: $\"\"$ ) \ \

The equality is true. $\"\"$

The solution $\"\"$