$\"\"$

The equation is $\"\"$ .

$\"\"$ (Divide each side by $\"\"$ )

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

$\"\"$ (Substrate $\"\"$ from each side)

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

Verify:

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

$\"\"$

$\"\"$ (Distributive property: $\"\"$ )

c = c – b + b (Cancel common terms)

c = c (Additive inverse property: b – b = 0)

Compare the values, the equation is true.

$\"\"$

The value of $\"\"$ .