The root of the equation 7(x - 1) = 21 is: - Vidyadip

MCQ

The root of the equation $7(x - 1) = 21$ is:

A
$1$
B
$2$
C
$3$
✓
$4$

✓

Answer

Correct option: D.

$4$

$\text{(x} -1 ) =21 \Rightarrow \text{x} - 1= \frac{21}{7}=3$
$ \Rightarrow \text{x = 4.}$

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