3x-4=-2(3x+5)

3x-4=-2(3x+5)
clear the fraction.

3x-4=-6x-10
add+6x+4 to both sides.

3x-4+6x+4=-6x-10+6x+4
9x=+4-10
Can you take it from here?

3x-4=-6x-10
9x=-6
x=-2/3