Question

pfv ajudeem ?x+3(x-1)-(x+9)= -147 s = {-45}

Answer 1

$x+3(x-1)-(x+9)= -147\to \\\\\\ x+3x-3-x-9=-147\to \\\\\ x+3x-x=-147+3+9\to \\\\ 3x=-135\to\\\\ x= \frac{-135}{3} \to \\\\ x=-45\\\\\\\\ S=\left \{ -45\left \}$

Answer 2

x + 3 (x - 1) - ( x + 9 ) = - 147
x + 3x - 3 - x - 9 = - 147
x + 3x - x = - 147 + 9 + 3
3x = - 135
x = - 135/3
x = - 45

S = { - 45 }