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Relation between Variables and Equations

Given y = 3...

Question

Given $y = 3 x - 4$ . If $y = 18$ , then value of $x$ is

A

2 \frac{1}{3}

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B

4 \frac{1}{3}

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C

7 \frac{1}{3}

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D

8 \frac{1}{3}

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Solution

The correct option is C $7 \frac{1}{3}$
$y = 3 x - 4$
given $y = 18$ Substitute in the above equation .
$18 = 3 x - 4 3 x = 22$

$x = \frac{22}{3} = 7 \frac{1}{3}$

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