Question

Which of the following equations has solution x = -2?

• A. 2x = -6
• B. x + 3 = 5
• C. 3 - x = 5
• D. 2x = - 1

Answer 1

The correct option is C 3 - x = 5

$2x=-6$
$\Rightarrow x=\frac{-6}{2}$
$\Rightarrow x=-3$

$x+3=5$
$\Rightarrow x=5-3=2$

$3-x=5$
$\Rightarrow -x=5-3=2$
$\Rightarrow x=-2$

$2x=-1$
$\Rightarrow x=\frac{-1}{2}$

Hence, $3-x=5$ is the correct option.