3[-x+2(2x+1)]=-1
Multiply the bracket by 2
(2)(2x)(2)(1)
4x+2
3 [-x+4x+2]=-1
3 [3x+2]=-1
Multiply the bracket by 3
(3)(3x)(3)(2)=-1
9x+6=-1
Move +6 to the other side. Sign changes from +6 to -6
9x+6-6=-1-6
9x=-7
Divide by 9 for both sides.
9x/9=-7/9
x=-7/9
Answer: x=-7/9
