Question

tim x

3x(12x-4)-9x(4x-3)=30

Answer 1

\(3x\left(12x-4\right)-9x\left(4x-3\right)=30\)

=>\(36x^2-12x-36x^2+17x=30\)

=>\(17x-12x=30\)

=>\(5x=30\)

=>x=30:5

=>x=6

Answer 2

\(3.\left(12x-4\right)-9.\left(4x-3\right)=30\)

\(\Rightarrow36x-12-36x+27=30\)

\(\Rightarrow36x-36x=30+12-27\)

\(\Rightarrow x.\left(36-36\right)=15\)

\(\Rightarrow x.0=15\)

\(\Rightarrow x=15:0\) \(???\)

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