MCQ
The solution of the equation $ax + b = 0$ is:
- A$\frac{\text{a}}{\text{b}}$
- B$-\text{b}$
- ✓$-\frac{\text{b}}{\text{a}}$
- D$\frac{\text{b}}{\text{a}}$
✓
Answer
Correct option: C.
$-\frac{\text{b}}{\text{a}}$
Given equation is $ax + b = 0$
$\Rightarrow\text{ax}=-\text{b}$ [transposing b to $RHS$]
$\Rightarrow\text{x}=-\frac{\text{b}}{\text{a}}$ [on dividing both sides by $a$]
$\Rightarrow\text{ax}=-\text{b}$ [transposing b to $RHS$]
$\Rightarrow\text{x}=-\frac{\text{b}}{\text{a}}$ [on dividing both sides by $a$]
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