Answer:
[tex]x=-\frac{a}{6}[/tex]
[tex]x=\frac{3}{a}[/tex]
[tex]x=-\frac{6}{a}[/tex]
Step-by-step explanation:
[tex]4=\frac{6}{a}x+5\\\Rightarrow 4-5=\frac{6}{a}x\\\Rightarrow -1=\frac{6}{a}x\\\Rightarrow x=-\frac{a}{6}[/tex]
[tex]\mathbf{x=-\frac{a}{6}}[/tex]
[tex]7+2ax=13\\\Rightarrow 7-13=-2ax\\\Rightarrow -6=-2ax\\\Rightarrow x=\frac{6}{2a}\\\Rightarrow x=\frac{3}{a}[/tex]
[tex]\mathbf{x=\frac{3}{a}}[/tex]
[tex]-ax-20=-14\\\Rightarrow -ax=-14+20\\\Rightarrow -ax=6\\\Rightarrow x=-\frac{6}{a}[/tex]
[tex]\mathbf{x=-\frac{6}{a}}[/tex]
