If $28 x - 5 y = 36$ and $15 x + 5 y + 18 = 68$ , then the value of $x$ is.

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Solution

The correct option is B $2$
Consider the given simultaneous equations:
$28 x - 5 y = 36$ ; $15 x + 5 y = 50$
Adding both gives us
$43 x = 86$
$∴ x = 2$
Hence, the required value of $x$ is $2$ .

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