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Linear Equations in One Variable — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSLinear Equations in One Variable1 Mark
MCQ
The root of the equation $\frac{\text{4x}}{3}-12=0$ is:
  • A
    $7$
  • B
    $14$
  • ✓
    $21$
  • D
    $-21$
✓

Answer

Correct option: C.
$21$

$\frac{\text{4x}}{7}-12=0 \Rightarrow \frac{\text{4x}}{7}= 12$
$ \Rightarrow \text{4x}= 7 \times 12 = 84$
$\Rightarrow \text{x}=\frac{\text{84}}{4}= 21$

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