Question 48: Find x knowing \(4 x(x-5)-(x-1)(4 x-3)=23 \)
\(\begin{aligned} 4 x(x-5)-(x-1)(4 x-3) &=23 \\ 4 x^{2}-20 x-4 x^{2}+3 x +4 x-3 &=23 \\ -13 x-3 &=23 \\ -13 x &=23+3 \\ -13 x &=26 \\ x &=-2 . \end{aligned}\ )
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Question 48: Find x knowing \(4 x(x-5)-(x-1)(4 x-3)=23 \)
\(\begin{aligned} 4 x(x-5)-(x-1)(4 x-3) &=23 \\ 4 x^{2}-20 x-4 x^{2}+3 x +4 x-3 &=23 \\ -13 x-3 &=23 \\ -13 x &=23+3 \\ -13 x &=26 \\ x &=-2 . \end{aligned}\ )
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