In order to answer this question, we must look for equations that are a constant multiple of the original equation, meaning both the left hand and the right-hand side has to be multiplied by the same number to get a potentially correct equation in the options.
Having that in mind, let us look at each of the choices one by one.
(1).
The LHS is multiplied by 6 whilst the RHS is not - there solving for x in this equation will not give the same value as in the original equation.
(2).
Both LHS and RHS are multiplied by 6; therefore, the value of x is the same as in the original equation.
(3).
Let us multiply both sides of the original equation by 6. Doing this gets us
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