Question

giải PT

5x + 2 - 3x = 7x - 6 -3x

Answer 1

 5x -7x -3x +3x = -6 -2

<=>-2x = -8

<=> x =4

Answer 2

\(\Leftrightarrow5x+2-3x-7x+6+3x=0\)

\(\Leftrightarrow-2x+8=0\)

\(\Leftrightarrow-2x=-8\)

\(\Leftrightarrow x=4\)

Answer 3

5x + 2 - 3x = 7x - 6 - 3x

<=> 2x - 7x + 3x = -2 - 6

<=> -2x = -8

<=> x = 4

Vậy S = {4}