Data Sufficiency (DS) | Re: If 5x + 3y – 4 = 3x + y, what is x ? (1) y^2 = 1 (2) x + y = 2

It's an E.

Statement 1.. It gives two values of Y and hence not sufficient.
Statement 2 is the same as the original equation.. gives nothing extra information about x or Y.

On combining both statements still we have no definite answer.

So E is the answer.

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