Question

 

Tìm x

4x(x-5)-(x-1)(4x-3)=5

Answer 1

\(4x\left(x-5\right)-\left(x-1\right)\left(4x-3\right)=5\)

\(\Rightarrow4x^2-20x-4x^2+3x+4x-3=5\)

\(\Rightarrow-17x=8\)

\(\Rightarrow x=-\frac{8}{17}\)

Answer 2

4x(x - 5) - (x - 1)(4x - 3) = 5

<=> 4x² - 20x - 4x² + 7x - 3 = 5

<=> -13x = 5 + 3

<=> -13x = 8

<=> x = 8 : -13

<=> x = -8/13