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3x+7=12 ,5/2x-9=1,\ x^2 +1=5 and 3x/3+...

`3x+7=12 ,5/2x-9=1,\ x^2 +1=5 ` and `3x/3+5=x/2-3`
are equations in one variable `xdot`

Answer

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Knowledge Check

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    A
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    B
    `3//4`
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