Consider the equation:
$y + 7 x = 3 x - 2 y + 28$
If $y = 2$ , what is the value of $x$ ?

5

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5.5

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6

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6.5

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Solution

The correct option is D $5.5$
Rearranging the equation, we get
$4 x + 3 y = 28$
$y = 2$
$∴ 4 x + 3 \times 2 = 28$
$\Rightarrow 4 x = 22$
$\Rightarrow x = \frac{22}{4} = 5.5$

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