2(x + 3) = 18
(2 × x) + (2 × 3) = 18
2x + 6 = 18
- 6 - 6
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
2x = 12
⁻⁻⁻ ⁻⁻⁻ = 6
2 2
Your answer is 6.
Divide both sides by 2
x + 3 = 18/2
Simplify 18/2 to 9
x + 3 = 9
Subtract 3 from both sides
x = 9 - 3
Simplify 9 - 3 to 6
x = 6
