x = 5 is the solution of the equation 3x + 2 = 20

False

Given equation is

3x + 2 = 20

⇒ 3x = 20 – 2

⇒ 3x = 18

⇒ x = 6

Hence, solution of given equation is x = 6

But, according to question x = 5 is the solution of the given equation.