k) 6x +1 =2x-11;
m) -x +3 = x+13;
2x+3 = 2x - 4;
g) -8x+4 =-7x-9;
(s) 12+ 4x = -12 + 2x ;
() -3.x + 7 =-2x+1;
n) 7x-3 = 2x - 28;
(p) 2x - 6 = x-6+x;
r) 19-2x = x-3;
t) -5x + 6 = -2x-12.