Question

− 3(x − 3)+ 3 = −(7 − x).

Answer 1

-3x + 9 +3 = -7 + x 
4x = 19 
x = 19/4 

Answer 2

$-3(x - 3) + 3 = -(7 - x) \\ \\ \\ -3x + 9 + 3 = -7 + x \\ \\ -3x + 12 = -7 + x \\ \\ -3x - x = -7 - 12 \\ \\ -4x = -19 * (-1)\\ \\ 4x = 19 \\ \\ \\=> x = \dfrac{19}{4}$