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Finding Unknown

If 3 x +7=13,...

Question

If $3 x + 7 = 13$ , then, $x$ is

A

2

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B

3

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C

6

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D

None of these

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Solution

The correct option is A 2
$3 x + 7 = 13 \Rightarrow 3 x = 13 - 7 \Rightarrow 3 x = 6 \Rightarrow x = \frac{6}{3} \Rightarrow x = 2$

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