6x+2/3x+3 division sign 2x-2/4x+4

Interpretation:

(6x+2)/(3x+3) ÷ (2x-2)/(4x+4)
= 2(3x+1)/(3(x+1) * (4(x+1))/(2(x-1)
= 4(3x+1)/(3(x-1)) , x ≠ ±1, -1/3