1) x-3=12 x=15
-(a+1)=12 a= -13
(a, x) = (-13, 15)
15-3= -(-13+1)=12
2) 3x-2-(3x+2-9-6x)=36
3x-2-(-3x+2-9)=36
3x-2+3x-2+9=36
6x-4+9-36=0
9+6x-40=0
D==1476=6
x1= =
x2= =
1) x-3=12 x=15
-(a+1)=12 a= -13
(a, x) = (-13, 15)
15-3= -(-13+1)=12
2) 3x-2-(3x+2-9-6x)=36
3x-2-(-3x+2-9)=36
3x-2+3x-2+9=36
6x-4+9-36=0
9+6x-40=0
D==1476=6
x1= =
x2= =