Question

If $ax+b=0$ is a linear equation and $a\ne 0$ then value of $x=...........$

Answer 1

Here,

$ax+b=0$ and $a\ne 0$

⇒ Subtracting $b$ on both sides,

$$\begin{gathered} ax+b-b=0-b \\ ax=-b \end{gathered}$$

Dividing $a$ on both sides,

$\frac{ax}{a}=\frac{-b}{a}$

$x=\frac{-b}{a}$

Therefore, the value of $x=\frac{-b}{a}$