Yes
You are free to start from any sides. It will not change your answer.
Although we prefer to start from that side which involves more calculation like removing parenthesis on right side will be better choice So for this problem i will recommend to start from the right side.
[tex] 8x+12=4(3+2)x [/tex]
[tex] 8x+12=4(5)x [/tex]
[tex] 8x+12=20x [/tex]
[tex]12=20x-8x [/tex]
[tex]12=12x [/tex]
[tex]12/12=12x/12 [/tex]
[tex]1=x [/tex]
Hence final answer to given equation is x=1.