The notion of linear equation

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Systems of linear equations and matrices: Linear equations

The notion of linear equation

Which of the following equations in #x# can be reduced to linear equations by expanding brackets and adding or subtracting terms on both sides where needed?

\(4x-1=-7\)

\(x=y\)

\(2(x+4)=3(-x+7)\)

\(2(x+4)=3(-y+7)\)

\(x^2+2x+1=0\)

\(x^2+2x+1=x^2\)

\(x^2-y^2=0\)

\((x+4)^2-(x-4)^2 =-1\)

\(\e^{x+4}=\e^{2x}\)

\(x+xy+y-1=0\)

\(\frac{x}{y}=1\)

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