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If 3x-y=27 , 3x+y=243 then find the x value

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4
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Correct Answer: 4

Explanation:

Given that $3 x - y = 27$ , $3 x + y = 243$

$\Rightarrow 3 x - y = 33, 3 x + y = 35$

=> x-y=3, x+y=5

=> x = 4

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