can’t solve this simultaneous equation elimination method y = -x & y = x – ?

I got exam on coming Monday but can’t solve this equation. who can help me with this equation plz

✅ Answers

? Favorite Answer

  • Straightaway, subtract the first equation from the second you eliminate the y,

    y = x –

    y = -x

    ————————

    = x – – ( – x)

    = x – – + x

    = x – ———> x = ——–> =

    Substitute the value of x into first equation, you get y =

  • -x = x- >>+ = x+x>>= x >>> =x

    or

    -x + (x +) = x -+ (x+)

    = x

    =x

  • Since they are both expressions for y, then:

    – x = x –

    Add +x to both sides:

    = x

    x =

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