Which of the following equations has a solution of x = 3?

$8 x - 10 = 2 x - 16$

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$7 x = 28$

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$2 x - 3 = 3 x - 6$

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$5 x = 15$

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Solution

The correct option is D
$5 x = 15$

Solving the given four equations, we get

$(i) 8 x - 10 = 2 x - 16$
$\Rightarrow 6 x = - 6$
$\Rightarrow x = - 1$

$(i i) 7 x = 28$
$\Rightarrow x = \frac{28}{7}$
$\Rightarrow x = 4$

$(i i i) 2 x - 3 = 3 x - 6$
$\Rightarrow 3 x - 2 x = 6 - 3$
$\Rightarrow x = 3$

$(i v) 5 x = 15$
$\Rightarrow x = \frac{15}{5}$
$\Rightarrow x = 3$

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