567888656556554e444544544566776778787887888865655557777
x + 2x = -36
(1 + 2)x = -36
3x = -36
x = -36/3
x = -12
x + 2x = -36
3x = -36
x = (-36) : 3
x = -12
x + 2x = -36
3x = -36
x = (-36) : 3
x = -12
x + 2x = -36
1x + 2x = -36
(1+2)x = -36
3x = -36
x = -36 :3
x = -12