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18 July, 13:51

If 3x-y=27 and 3x+y=243 what is the value of x?

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  1. 18 July, 14:24
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    Answer: 4

    Explanation:

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

    ⇒3x-y = 33, 3x+y=35

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

    => x = 4
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