Question

how do you do this equation 2|3x-4|=20

Answer 1

divide both sides by 2
what u get ?

Answer 2

\(\bf 2|3x-4|=20\implies |3x-4|=\cfrac{20}{2}\\ \quad \\
|3x-4|=\cfrac{20}{2}\implies
\begin{cases}
+(3x-4)=\cfrac{20}{2}\\ \quad \\
\bf -(3x-4)=\cfrac{20}{2}
\end{cases}\)

as suggested already
notice you'd get 2 values for "x", one for each scenario