Question

Aflati x :
x+2=3(x-20)

Answer 1

x+2=3x-60 ( desfacem paranteza in membrul drept ) => x-3x=-60-2 ( trecem termenii cu x in membrul stang, iar termenii liberi ii trecem in membrul drept ) => -2x=-62 => 2x=62 => x=31

Answer 2

x+2=3*(x-20) =
x+2=3x-3 x 20 =
x+2=3x - 60 =
x - 3x = -60 -2  =
x - 3x = -62 =
-2x = -62 =
x = 31 .