Question

Can you please help me understand and answer this question

Answer 1

Hello!

To solve this exercise, we have to put the equations isolating the x variable, look:

a)

`\begin{gathered} 7+2ax=13 \\ 2ax=13-7 \\ 2ax=6 \\ x=(6)/(2a) \\ \\ \boxed{x=(3)/(a)} \end{gathered}`

b)

`\begin{gathered} 4=(6)/(a)x+5 \\ \\ 4-5=(6)/(a)x \\ -1=(6)/(a)x \\ -1a=6x \\ 6x=-1a \\ \boxed{x=-(a)/(6)} \end{gathered}`

c)

`\begin{gathered} -ax-20=-14 \\ -ax=-14+20 \\ -ax=6 \\ \boxed{x=-(6)/(a)} \end{gathered}`