Start by simplifying all the pairs of expressions
[tex]\begin{gathered} 4(6x)\text{ and 10x} \\ 24x\ne10x \end{gathered}[/tex]The pairs are not equivalent
The following pair
[tex]\begin{gathered} 4x+6x\text{ and 10x } \\ 10x=10x \end{gathered}[/tex]the second pair of expressions are equivalent.
