$\"\"$

The equation is g + ( $\"\"$ 18) = $\"\"$ 36.

g $\"\"$ 18 = $\"\"$ 36 (Product of two different signs is negative)

Apply addition property of equality: If a = b then a + c = b + c.

g $\"\"$ 18 + 18 = $\"\"$ 36 + 18 (Add 18 to each side)

g = $\"\"$ 36 + 18 (Apply additive inverse property: 18 $\"\"$ 18 = 0)

g = $\"\"$ 18 (Add: $\"\"$ 36 + 18 = $\"\"$ 18) $\"\"$

Check:

To check the solution, substitute g = $\"\"$ 18 in original equation.

g + ( $\"\"$ 18) = $\"\"$ 36 $\"\"$ $\"\"$ 18 + ( $\"\"$ 18) = $\"\"$ 36

$\"\"$ 18 $\"\"$ 18 = $\"\"$ 36 (Product of two different signs is negative)

$\"\"$ 36 = $\"\"$ 36 (Subtract: $\"\"$ 18 $\"\"$ 18 = $\"\"$ 36)

The statement is true. $\"\"$

The value of g = $\"\"$ 18.